{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03573_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Baltimore, Maryland | 1901 | mapsnap generated fit (2026-10-24)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-24"},{"label":"run","value":"corpus-v2.2"},{"label":"pages","value":"146"},{"label":"placed","value":"117"},{"label":"unplaced","value":"29"},{"label":"fit sources","value":"georef 77, georef-snap 40, snap:0 4, georef-street 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"19 sheet(s) cut into 46 panels"},{"label":"unplaced pages","value":"p148__2 (tier 1, 39.29912,-76.62184 +/-100m); p187__1 (tier 1, 39.30820,-76.65010 +/-100m); p194__2 (tier 1, 39.30981,-76.65284 +/-100m); p196__2 (tier 1, 39.31014,-76.64308 +/-100m); p203__1 (tier 1, 39.31096,-76.63290 +/-100m); p207__1 (tier 1, 39.31210,-76.61902 +/-172m); p210__2 (tier 1, 39.31869,-76.62014 +/-100m); p215__2 (tier 1, 39.33038,-76.63413 +/-115m); p220__1 (tier 1, 39.31959,-76.62825 +/-100m); p220__2 (tier 1, 39.31949,-76.62550 +/-129m); p220__4 (tier 1, 39.33967,-76.63342 +/-100m); p221__2 (tier 4, 39.30492,-76.63433 +/-6155m); p221__3 (tier 4, 39.30492,-76.63433 +/-6155m); p222__1 (tier 1, 39.31557,-76.62258 +/-100m); p222__2 (tier 1, 39.31543,-76.62242 +/-190m); p222__3 (tier 1, 39.31520,-76.62303 +/-100m); p222__4 (tier 1, 39.31460,-76.62171 +/-100m); p225__1 (tier 1, 39.29606,-76.66539 +/-157m); p225__2 (tier 1, 39.31769,-76.67013 +/-104m); p225__4 (tier 1, 39.29498,-76.66423 +/-137m); p227__2 (tier 1, 39.31126,-76.64815 +/-149m); p228__1 (tier 2, 39.30951,-76.67116 +/-100m); p228__2 (tier 1, 39.32598,-76.68358 +/-176m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0115/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p115","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.64"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0115/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0115","type":"ImageService3","width":1424,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1261.4,1950.5 697.7,1843.5 697.1,1641.4 572.8,1502.6 571.4,1553.1 380.7,1549.2 235.8,1546.4 201.0,751.8 281.6,670.0 198.6,565.0 192.4,543.7 215.4,535.5 218.3,534.8 235.7,204.3 218.7,193.5 296.8,103.0 285.0,96.8 702.2,23.0 705.0,23.0 705.0,22.5 717.4,20.3 717.5,12.3 724.0,12.0 727.0,22.0 781.0,21.0 782.0,14.0 787.6,12.9 809.9,13.5 862.0,18.0 862.5,15.1 866.2,15.2 868.0,17.0 1293.1,28.0 1293.0,35.6 1288.7,404.1 1273.3,1236.2 1263.0,1852.0 1261.4,1950.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0115/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[184.0,1545.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6308034,39.2954295]}},{"type":"Feature","properties":{"resourceCoords":[1263.0,1852.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6313521,39.2934518]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0116/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p116","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.70"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0116/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0116","type":"ImageService3","width":1413,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"68.0,1281.4 60.2,450.6 54.4,82.8 54.1,61.0 537.0,67.7 537.3,84.5 1326.9,63.1 1304.5,95.5 1355.0,142.3 1351.3,1412.5 423.7,1762.2 74.7,1896.0 68.0,1281.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0116/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[563.0,1710.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6308748,39.292583]}},{"type":"Feature","properties":{"resourceCoords":[1365.0,62.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6269597,39.2912484]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0117/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p117","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0117/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0117","type":"ImageService3","width":1409,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"26.6,672.1 25.3,277.9 23.5,248.8 25.2,247.0 25.0,190.9 24.7,99.0 214.9,95.0 930.9,80.0 1285.4,77.1 1361.8,20.5 1368.4,37.4 1383.4,75.3 1390.8,645.2 1387.9,886.3 1388.1,1177.6 1400.7,1814.2 1372.8,1814.3 1309.8,1916.6 1031.5,1996.9 93.3,1973.8 45.5,1941.2 19.9,1153.8 36.7,1153.4 40.8,671.9 26.6,672.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0117/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[791.0,1965.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62521983644743,39.29131791297157]}},{"type":"Feature","properties":{"resourceCoords":[62.0,1965.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6269252508241,39.29127484161858]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0118/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p118","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0118/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0118","type":"ImageService3","width":1412,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"714.0,122.0 1295.2,123.0 1294.1,460.1 1290.6,684.9 1286.8,1263.0 1286.4,1684.1 1288.2,1889.2 117.7,1874.0 116.5,1232.7 121.5,939.3 128.7,696.6 131.6,122.5 714.0,122.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0118/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1003.0,1264.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6218217,39.2928031]}},{"type":"Feature","properties":{"resourceCoords":[714.0,122.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6226265,39.2948282]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0119/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p119","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0119/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0119","type":"ImageService3","width":1438,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"64.8,1738.0 65.6,1316.1 70.1,737.0 73.8,511.9 75.3,174.2 690.8,171.2 1057.2,171.5 1379.8,177.3 1377.0,687.9 1376.6,1277.3 1378.4,1697.7 1339.0,1678.0 1087.1,1747.8 1076.1,1815.0 80.7,1710.9 64.8,1738.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0119/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[714.0,1316.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6196609,39.2928909]}},{"type":"Feature","properties":{"resourceCoords":[458.0,172.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6203909,39.2949185]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0120/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p120","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0120/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0120","type":"ImageService3","width":1438,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"134.7,1268.1 140.0,682.5 147.1,175.4 773.6,178.6 1350.3,186.7 1332.4,222.4 1311.4,1940.9 962.5,1897.5 612.5,1749.4 260.9,1750.7 132.9,1685.7 134.7,1268.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0120/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1313.0,1070.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61541129297088,39.293506758964234]}},{"type":"Feature","properties":{"resourceCoords":[730.0,1309.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6167368642212,39.29301237399226]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0121/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p121","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0121/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0121","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1295.1,1960.2 1268.3,1960.0 1055.3,1785.5 175.2,1851.6 159.0,1709.7 71.9,1661.3 60.0,398.7 317.1,389.9 622.8,359.4 632.6,365.6 1362.7,337.6 1362.7,355.8 1362.4,394.6 1356.7,1432.6 1359.4,1649.3 1354.3,1879.2 1295.1,1960.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0121/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[619.0,1685.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.648805,39.2905053]}},{"type":"Feature","properties":{"resourceCoords":[1358.0,1685.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6470721,39.2905632]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0122/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p122","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0122/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0122","type":"ImageService3","width":1409,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"782.8,372.3 1353.0,371.4 1387.7,371.3 1393.3,1108.8 1394.9,1661.3 1349.1,1656.5 1249.3,1734.0 1243.3,1882.3 1191.7,1872.8 1190.3,1724.2 990.2,1716.0 103.8,1783.5 46.8,1861.8 51.5,1632.3 48.2,1415.8 51.8,378.9 782.8,372.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0122/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1100.0,869.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6446841,39.2920931]}},{"type":"Feature","properties":{"resourceCoords":[50.0,869.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6471493,39.2920148]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0123/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p123","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0123/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0123","type":"ImageService3","width":1440,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"110.2,382.4 1020.9,380.2 1324.4,379.4 1326.1,642.9 1325.4,1482.3 1327.1,1677.5 998.1,1772.6 114.3,1680.2 112.2,1124.3 106.0,382.4 110.2,382.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0123/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1326.0,911.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64116,39.2921529]}},{"type":"Feature","properties":{"resourceCoords":[417.0,1680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.643209,39.2906979]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0124/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p124","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0124/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0124","type":"ImageService3","width":1411,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"93.7,1472.3 93.2,634.0 91.0,371.0 1301.2,366.3 1302.2,1688.0 1232.2,1879.1 1063.0,1820.3 1035.8,1752.2 653.9,1789.6 297.2,1753.4 106.8,1664.0 95.7,1667.2 93.7,1472.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0124/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1302.0,1366.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6382933,39.291398]}},{"type":"Feature","properties":{"resourceCoords":[91.0,371.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6412138,39.2931128]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0125/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p125","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0125/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0125","type":"ImageService3","width":1440,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"80.1,377.4 1298.0,378.0 1297.7,880.5 1311.6,1644.8 1307.3,1641.9 898.2,1773.5 75.2,1700.7 80.1,377.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0125/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[989.0,884.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6362132,39.2923621]}},{"type":"Feature","properties":{"resourceCoords":[1298.0,378.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6355431,39.2933002]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0126/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p126","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0126/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0126","type":"ImageService3","width":1411,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"31.0,869.2 31.4,371.4 671.0,372.0 1385.2,368.1 1386.2,856.0 1361.5,856.3 1342.0,1670.7 1340.5,1672.8 649.4,1738.8 119.2,1678.7 44.5,1626.5 31.0,869.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0126/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[671.0,863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6339859,39.2924547]}},{"type":"Feature","properties":{"resourceCoords":[671.0,372.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6340363,39.2933499]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0127/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p127","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0127/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0127","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"318.2,1674.8 337.6,854.3 362.6,854.1 361.4,362.5 620.1,361.0 790.0,360.0 921.7,708.8 1265.5,1635.7 1232.7,1701.7 1022.7,1729.8 396.6,1725.1 338.6,1690.1 318.2,1674.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0127/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[973.0,848.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6308748,39.292583]}},{"type":"Feature","properties":{"resourceCoords":[790.0,360.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6313521,39.2934518]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0128/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p128","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0128/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0128","type":"ImageService3","width":1427,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"782.5,573.7 1349.8,677.5 1349.0,750.0 1346.4,1011.3 1339.0,1738.0 780.0,1738.0 378.4,1732.3 93.7,1146.1 94.8,1072.5 95.4,1033.5 195.7,998.4 247.3,955.0 264.1,277.0 293.7,277.8 461.8,279.9 653.5,282.6 654.6,231.8 780.5,370.5 782.5,573.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0128/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[780.0,1738.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6341129,39.2943508]}},{"type":"Feature","properties":{"resourceCoords":[1339.0,1738.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6340363,39.2933499]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0129/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p129","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0129/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0129","type":"ImageService3","width":1415,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"122.3,1940.7 129.8,1564.2 65.3,1478.8 35.2,1100.8 90.0,673.4 83.8,59.0 1388.7,52.1 1392.1,743.9 1388.0,1928.2 1388.0,1941.6 647.8,1972.4 637.9,1966.2 327.9,1998.2 67.3,2007.9 122.3,1940.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0129/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[634.0,745.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64905200933934,39.29509708451312]}},{"type":"Feature","properties":{"resourceCoords":[49.0,1992.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.65028994120145,39.292823050652636]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0130/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p130","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0130/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0130","type":"ImageService3","width":1427,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1356.1,1996.2 781.7,1995.8 45.2,2000.9 45.5,1961.8 45.7,1930.1 53.6,754.9 52.6,68.3 1361.8,66.6 1398.3,66.6 1399.4,484.8 1398.4,1618.5 1395.2,1996.2 1356.1,1996.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0130/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[50.0,751.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64730745983454,39.29516001193107]}},{"type":"Feature","properties":{"resourceCoords":[1375.0,1486.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64414543109177,39.29393787706665]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0131/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p131","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0131/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0131","type":"ImageService3","width":1450,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"102.0,76.2 707.7,74.3 707.6,96.0 1172.4,74.0 1298.2,757.1 1311.2,757.0 1307.3,1469.7 1296.8,1469.9 1305.2,1994.1 1009.3,1994.5 102.2,1995.9 104.6,1620.0 103.2,492.2 101.2,76.2 102.0,76.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0131/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[706.0,758.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6427518,39.2953087]}},{"type":"Feature","properties":{"resourceCoords":[706.0,1995.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6426324,39.2930659]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0132/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p132","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0132/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0132","type":"ImageService3","width":1439,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"142.8,2021.4 138.3,1505.5 148.7,1505.3 157.5,804.0 144.7,803.9 24.5,123.5 167.5,74.2 167.5,62.2 750.1,61.5 750.2,39.7 1347.1,44.5 1346.7,143.2 1337.2,2028.2 149.1,2021.4 142.8,2021.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0132/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[744.0,1494.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63985885268251,39.29413711830859]}},{"type":"Feature","properties":{"resourceCoords":[744.0,54.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64002470694082,39.29678911035924]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0133/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p133","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0133/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0133","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"702.5,63.0 1008.5,63.7 1328.2,61.1 1327.8,751.0 1324.2,1660.5 1324.5,2003.6 96.8,2002.8 97.0,64.8 702.5,63.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0133/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1011.0,751.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.636395,39.2955202]}},{"type":"Feature","properties":{"resourceCoords":[97.0,751.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6385112,39.2954491]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0134/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p134","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0134/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0134","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"107.2,1639.7 116.5,737.1 121.2,52.5 1188.0,56.0 1425.0,705.4 1425.0,743.9 1400.0,743.8 1327.0,743.4 747.9,1031.3 746.0,1430.0 751.2,1984.8 105.4,1980.2 107.2,1639.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0134/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[746.0,1430.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6341129,39.2943508]}},{"type":"Feature","properties":{"resourceCoords":[1188.0,56.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6332415,39.2968706]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0135/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p135","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0135/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0135","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"385.6,133.3 558.7,136.1 1337.0,133.0 1334.6,311.7 1334.2,1207.4 1282.4,1298.5 1256.8,1310.2 1323.4,1935.4 1319.7,1952.4 1283.4,2065.4 1283.2,2066.0 1263.0,2057.0 1129.7,2052.9 1119.0,1939.0 491.1,1455.7 505.8,1438.8 525.4,1417.0 25.0,968.3 25.5,901.4 63.5,803.2 53.2,794.1 78.4,765.1 325.4,120.4 385.6,133.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0135/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[788.0,1118.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6308451,39.296149]}},{"type":"Feature","properties":{"resourceCoords":[1337.0,133.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6315153,39.2981227]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0136/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p136","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0136/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0136","type":"ImageService3","width":1427,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"163.9,1947.2 92.1,1319.2 117.8,1307.2 169.2,1215.3 162.8,314.9 163.8,135.2 443.9,134.8 1269.4,130.8 1271.3,772.8 1270.4,1354.5 1270.7,1397.5 1272.6,1676.4 716.9,1698.0 717.0,1720.2 399.7,1693.0 210.6,1702.3 180.4,1867.7 163.9,1947.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0136/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1277.0,1079.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62812543413595,39.298266057124174]}},{"type":"Feature","properties":{"resourceCoords":[445.0,802.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62997399197965,39.29759877169734]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0137/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p137","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.70"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0137/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0137","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"36.4,552.2 63.0,434.6 75.4,335.7 92.2,166.8 281.8,141.9 603.4,143.3 601.5,121.0 1159.1,53.8 1195.6,467.2 1205.0,605.2 1264.2,1379.5 1280.5,1627.0 1309.2,1996.7 1308.4,2046.0 1307.5,2049.3 1272.8,2049.1 1210.8,2048.7 921.0,1834.8 330.1,1409.9 165.2,1291.5 352.8,888.8 340.8,895.0 311.2,777.8 292.3,785.5 28.6,579.4 29.7,576.5 36.4,552.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0137/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1234.0,1106.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62552549038354,39.29610102109095]}},{"type":"Feature","properties":{"resourceCoords":[1234.0,2020.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62420713701493,39.2948309349064]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0138/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p138","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0138/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0138","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1347.1,1059.2 1155.0,1270.1 477.8,1998.4 40.4,1619.8 62.2,1561.5 67.2,1513.2 71.1,1148.2 76.6,904.1 85.7,139.9 726.9,108.1 1041.0,90.3 1388.7,73.8 1389.4,174.0 1391.0,671.0 1417.7,884.8 1417.8,993.1 1400.8,1006.7 1347.1,1059.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0138/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[470.0,880.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62445182046075,39.2962795885455]}},{"type":"Feature","properties":{"resourceCoords":[84.0,880.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6251034728636,39.2957955509449]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0139__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p139 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5210.0"},{"label":"split_canvas_w","value":"5744.0"},{"label":"split_canvas_h","value":"3058.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0139__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0139","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1361.4,1970.5 1363.6,1383.7 1329.6,1376.6 862.6,1380.5 378.6,1375.8 352.2,1407.5 352.7,1375.0 332.8,1374.9 304.6,1374.7 287.0,1374.8 325.6,1390.4 285.1,1489.3 139.3,1666.9 20.2,1812.9 19.6,1922.4 60.4,1925.8 350.4,1933.4 1361.4,1970.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0139__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[-78.0,1946.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62274398904127,39.297389483469175]}},{"type":"Feature","properties":{"resourceCoords":[1340.0,1946.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62257304180909,39.29486847786278]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0139__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p139 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5744.0"},{"label":"split_canvas_h","value":"5255.6"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0139__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0139","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"58.3,831.0 501.2,1055.1 703.5,1128.3 799.9,1177.3 804.3,1198.7 808.9,1213.4 884.5,1182.7 1091.5,1246.0 1307.0,1312.8 1322.6,1312.9 1412.0,1312.9 1412.0,1272.0 1303.8,1007.1 1090.5,463.2 916.1,21.0 915.0,20.8 901.4,18.4 888.0,20.0 887.0,16.0 853.8,15.2 768.4,182.5 449.0,18.4 448.0,20.0 407.0,20.0 406.0,25.0 390.0,25.0 389.0,20.0 334.4,19.9 217.7,403.4 137.9,362.8 89.2,502.5 24.5,662.3 24.1,813.9 58.3,831.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0139__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[808.0,1159.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62263721300799,39.29734537897409]}},{"type":"Feature","properties":{"resourceCoords":[581.0,74.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6223045815556,39.29934057517508]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0140/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p140","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"34"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0140/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0140","type":"ImageService3","width":1430,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"187.1,1225.8 25.4,1231.5 26.2,1207.6 95.8,1178.4 161.7,1104.7 211.5,990.9 276.4,861.9 304.6,756.1 312.9,684.2 341.7,644.0 326.1,434.9 276.1,120.6 222.3,56.8 265.4,57.0 758.6,71.2 1329.5,73.5 1328.5,103.3 1340.7,1989.0 827.2,1985.8 828.0,1905.2 556.5,1759.8 513.4,1516.2 281.4,1563.8 180.5,1660.7 187.1,1225.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0140/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[751.0,640.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6174351,39.3034017]}},{"type":"Feature","properties":{"resourceCoords":[1336.0,1989.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6158748,39.3010039]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0141/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p141","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0141/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0141","type":"ImageService3","width":1435,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"61.4,1965.9 56.0,1503.8 58.9,1024.8 59.6,999.1 59.8,951.6 58.4,645.6 64.0,56.9 378.4,59.4 636.8,56.2 1029.5,56.3 1359.0,58.4 1354.3,1258.0 1354.2,1695.9 1356.4,1999.2 1034.5,1994.2 668.8,1995.0 54.6,1999.5 61.4,1965.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0141/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1027.0,650.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61917279911842,39.29738963072524]}},{"type":"Feature","properties":{"resourceCoords":[64.0,650.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62140882705971,39.297304889959044]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0142/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p142","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"24"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0142/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0142","type":"ImageService3","width":1416,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"108.3,1686.5 117.0,1252.2 145.6,62.3 434.8,60.3 781.4,65.1 1321.5,78.2 1296.3,158.9 1376.9,611.9 1284.7,1082.8 1337.1,1944.0 1303.6,2009.4 728.8,1996.2 104.4,1987.5 108.3,1686.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0142/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[706.0,1069.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6169966,39.2967309]}},{"type":"Feature","properties":{"resourceCoords":[1280.0,1700.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.615553,39.2956612]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0143/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p143","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0143/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0143","type":"ImageService3","width":1435,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"50.2,1311.7 50.0,1257.2 46.9,833.9 57.4,754.8 22.2,711.9 22.3,647.5 22.3,625.0 268.1,399.9 381.4,303.8 548.5,157.0 586.1,110.2 637.3,16.4 637.2,99.0 651.0,336.1 709.4,342.1 768.9,326.1 803.1,300.8 783.5,349.7 813.0,425.3 983.5,553.6 1041.5,501.7 1175.4,341.0 1336.5,167.7 1337.0,586.1 1333.2,844.9 1342.4,1831.3 1013.9,1831.8 622.5,1835.0 365.0,1840.3 51.7,1840.3 51.5,1362.7 26.1,1347.3 50.2,1311.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0143/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6217717,39.3016856]}},{"type":"Feature","properties":{"resourceCoords":[1435.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6184275,39.3017912]}},{"type":"Feature","properties":{"resourceCoords":[1435.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6182309,39.2980636]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6215751,39.297958]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0144/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p144","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"21"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0144/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0144","type":"ImageService3","width":1416,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"138.1,871.2 143.8,614.4 146.3,198.8 246.8,100.7 479.4,50.6 525.0,294.9 799.1,438.4 799.0,519.4 1314.8,517.8 1334.5,1769.2 1313.4,1842.0 774.4,1840.3 428.7,1842.8 140.2,1850.8 138.1,871.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0144/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1019.0,1264.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6164736,39.2996239]}},{"type":"Feature","properties":{"resourceCoords":[143.0,650.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.618598,39.3006622]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0145/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p145","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0145/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0145","type":"ImageService3","width":1432,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"752.9,1882.5 115.4,1877.9 86.4,1154.3 72.8,896.3 61.3,614.2 63.4,581.3 63.5,132.1 1278.0,136.0 1278.0,531.0 1269.4,643.7 1321.5,1827.5 1330.5,1889.4 752.9,1882.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0145/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[89.0,1220.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6285889,39.3003592]}},{"type":"Feature","properties":{"resourceCoords":[1278.0,136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6248277,39.3001743]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0146/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p146","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0146/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0146","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1091.6,1877.2 407.8,1881.4 365.1,1881.7 355.4,1820.0 292.2,638.8 299.8,526.3 296.0,132.0 439.6,132.1 908.2,126.8 1108.7,126.9 1129.6,273.2 1145.7,444.6 1215.0,579.2 1153.2,580.1 1171.8,926.7 1191.5,1239.8 1227.3,1879.1 1091.6,1877.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0146/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[296.0,582.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6255941,39.2996122]}},{"type":"Feature","properties":{"resourceCoords":[296.0,132.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6248277,39.3001743]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0147/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p147","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0147/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0147","type":"ImageService3","width":1432,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"120.0,1822.0 143.0,1750.8 126.8,1364.3 113.3,913.0 105.1,489.6 106.6,352.1 110.8,302.8 141.2,200.0 740.8,183.8 1322.8,185.2 1322.8,187.4 1321.5,237.2 1316.0,465.2 1331.9,730.7 1367.5,773.0 1351.9,847.5 1340.0,1102.8 1338.4,1365.6 1341.5,1819.3 120.0,1822.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0147/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[737.0,1365.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6250353,39.3015277]}},{"type":"Feature","properties":{"resourceCoords":[120.0,1822.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6267978,39.3017626]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0148__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p148 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.96"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5748.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0148__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0148","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1076.7,817.1 1024.5,757.3 969.4,755.5 904.6,698.5 897.8,367.5 900.4,220.1 900.4,1.0 852.9,1.0 850.9,215.6 172.7,215.3 107.1,212.1 106.2,251.9 100.9,478.0 117.0,741.3 152.3,783.2 136.9,857.1 125.3,1110.4 124.0,1371.0 127.5,1821.0 271.0,1821.5 739.1,1817.7 939.5,1818.5 1028.8,1818.2 957.5,1424.5 1058.4,1371.0 1416.7,1371.0 1416.1,1158.9 1416.0,1111.0 1394.4,1092.2 1076.7,817.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0148__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1192.0,1371.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6223375,39.2993387]}},{"type":"Feature","properties":{"resourceCoords":[124.0,1371.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6240685,39.3007433]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0149/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p149","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.44"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0149/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0149","type":"ImageService3","width":1432,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"79.0,2046.0 31.0,2046.8 36.7,1990.9 64.5,1894.5 90.8,1836.9 92.4,1833.8 108.3,1311.4 78.0,1306.0 78.0,725.0 101.2,725.3 132.7,300.2 205.6,399.5 647.4,482.8 692.8,519.9 1119.6,423.4 1323.8,197.9 1324.3,490.9 1320.2,490.2 1317.5,1028.0 1306.2,1019.8 1293.6,1643.0 1291.7,1918.6 713.1,1905.1 116.6,1908.7 84.3,2010.2 79.0,2046.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0149/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[78.0,1306.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6230962,39.3045756]}},{"type":"Feature","properties":{"resourceCoords":[78.0,725.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6221322,39.3053189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0150/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p150","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.52"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0150/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0150","type":"ImageService3","width":1440,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"35.0,1866.4 34.9,1589.5 42.9,968.4 54.1,976.5 52.9,440.5 57.0,441.1 54.3,149.2 66.0,136.2 178.8,10.0 262.7,11.4 533.2,181.4 701.5,308.0 712.8,356.3 761.7,410.1 822.9,501.3 877.5,635.7 930.5,748.5 942.6,847.0 918.6,919.0 936.1,935.4 1038.8,809.5 1363.0,1102.0 1383.2,1335.9 1412.4,1541.4 1412.0,1618.6 1204.0,1658.8 1128.7,1630.1 1105.8,1583.1 1101.7,1625.2 1073.8,1679.7 1030.5,1718.6 846.8,1570.8 786.1,1515.8 821.0,1615.9 830.4,1674.8 830.4,1675.6 783.0,1675.0 777.8,1890.3 100.2,1880.2 34.6,1876.0 35.0,1866.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0150/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[44.0,1594.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62163796056107,39.30256626355106]}},{"type":"Feature","properties":{"resourceCoords":[1380.0,674.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6178953453391,39.30200469168419]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0151/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p151","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0151/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0151","type":"ImageService3","width":1429,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"373.9,167.5 380.5,175.3 384.1,179.6 391.9,188.9 427.9,71.0 432.4,58.4 1126.5,65.3 1125.5,45.1 1238.2,107.7 1192.8,743.3 1049.5,743.8 1033.5,743.9 1033.2,799.1 1207.2,1030.6 1217.4,1116.4 1186.0,1275.2 1177.8,1316.6 1182.7,1358.8 1280.9,1911.5 1237.0,1911.3 1066.3,1909.2 742.7,1905.7 385.3,1648.8 383.0,1589.8 215.7,1310.0 150.8,1201.7 373.9,167.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0151/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1264.0,1889.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61870001393149,39.304452367437925]}},{"type":"Feature","properties":{"resourceCoords":[158.0,251.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62149400973276,39.307282391189716]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0152/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p152","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0152/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0152","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"250.9,1875.6 748.7,1888.6 1324.9,1889.5 1372.9,320.8 1345.7,320.8 1346.3,198.2 750.8,136.4 750.4,191.4 198.6,122.1 158.8,712.1 16.0,713.2 1.0,713.2 1.0,769.7 174.2,998.2 184.7,1083.7 154.0,1242.0 145.9,1283.4 151.0,1325.3 250.9,1875.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0152/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[755.0,1884.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61747993667105,39.30444822642957]}},{"type":"Feature","properties":{"resourceCoords":[1044.0,704.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61695614116373,39.306607996308465]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0153/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p153","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"23"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0153/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0153","type":"ImageService3","width":1426,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"58.2,492.0 144.9,383.8 152.2,211.3 615.0,91.1 615.0,75.6 1356.6,72.9 1359.7,1322.2 1362.6,1645.3 1361.3,1969.9 69.5,1973.6 58.2,492.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0153/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[300.0,672.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6499784,39.2986566]}},{"type":"Feature","properties":{"resourceCoords":[614.0,1972.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6491161,39.2963303]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0154/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p154","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0154/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0154","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1408.7,71.0 1405.0,1988.2 1367.6,1988.2 49.0,1987.9 51.0,1660.2 49.0,1334.0 48.9,72.6 1408.7,71.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0154/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[60.0,672.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64748131542257,39.29874836442188]}},{"type":"Feature","properties":{"resourceCoords":[60.0,1327.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64741336198563,39.297575582515435]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0155/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p155","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0155/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0155","type":"ImageService3","width":1429,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"96.9,96.5 1310.2,98.5 1310.8,910.9 1314.3,1945.9 1168.2,1996.8 1169.6,2004.2 701.8,2024.4 702.0,2002.6 92.5,2002.1 96.9,96.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0155/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[94.0,1353.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6442975,39.2976691]}},{"type":"Feature","properties":{"resourceCoords":[1012.0,98.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6422927,39.3000047]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0156/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p156","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0156/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0156","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"115.5,933.4 108.0,122.0 1319.6,113.5 1332.0,1922.5 722.5,1924.8 722.7,1947.0 127.8,1954.8 115.5,933.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0156/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1027.0,1631.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6393267,39.2973662]}},{"type":"Feature","properties":{"resourceCoords":[108.0,122.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6415983,39.3000281]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0157/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p157","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"23"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0157/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0157","type":"ImageService3","width":1429,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1019.6,1971.4 715.6,1970.0 113.7,1970.5 113.9,1869.7 117.7,59.6 1342.7,62.6 1339.2,1320.0 1339.2,1367.8 1337.4,1969.5 1019.6,1971.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0157/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[719.0,1319.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6372396,39.2979028]}},{"type":"Feature","properties":{"resourceCoords":[1341.0,659.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6358609,39.2991437]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0158/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p158","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0158/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0158","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"271.0,1968.0 271.1,1369.5 271.1,1321.9 271.0,71.0 625.7,70.6 850.0,663.2 1094.3,1326.9 1333.8,1964.2 271.0,1968.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0158/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[271.0,1629.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6357641,39.2973955]}},{"type":"Feature","properties":{"resourceCoords":[271.0,71.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6359205,39.3002189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0159/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p159","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0159/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0159","type":"ImageService3","width":1432,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"368.0,1958.6 194.7,1956.8 134.3,1944.3 373.2,1304.2 625.9,641.0 846.9,44.8 875.5,69.8 887.9,80.5 1139.8,78.8 1145.9,1741.6 1147.2,1951.0 368.0,1958.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0159/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[852.0,1953.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6320119,39.2977526]}},{"type":"Feature","properties":{"resourceCoords":[852.0,673.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6340708,39.2994303]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0160/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p160","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0160/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0160","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"736.6,77.2 1273.7,76.5 1273.5,619.5 1270.5,1361.6 1267.0,1959.0 442.2,1955.8 162.3,1953.8 162.5,1743.7 168.0,75.4 736.6,77.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0160/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[443.0,1355.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6320115,39.2992504]}},{"type":"Feature","properties":{"resourceCoords":[1267.0,1959.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6296543,39.2994963]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0161/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p161","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0161/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0161","type":"ImageService3","width":1432,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1233.7,121.7 1231.4,756.4 1230.5,1359.3 1232.2,1522.0 1229.8,1917.8 1236.4,1952.4 977.8,1967.0 252.4,1998.8 254.6,1403.5 255.9,663.9 254.9,122.9 1233.7,121.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0161/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[581.0,720.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6311677,39.3015762]}},{"type":"Feature","properties":{"resourceCoords":[256.0,720.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6317158,39.3011696]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0162/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p162","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"24"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0162/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0162","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"130.6,119.8 392.6,116.5 1338.0,104.5 1354.2,1920.0 971.5,1939.8 900.8,1917.8 453.4,1924.6 420.6,1923.0 139.7,1938.8 132.8,1904.5 130.6,1511.3 127.0,1349.7 121.0,750.6 116.0,120.0 130.6,119.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0162/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[652.0,1312.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6281984,39.3022575]}},{"type":"Feature","properties":{"resourceCoords":[116.0,120.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6310343,39.3031736]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0163/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p163","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0163/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0163","type":"ImageService3","width":1432,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1127.5,1915.5 1119.8,1915.4 990.9,1913.8 569.7,1921.3 121.0,1934.2 125.5,111.7 396.0,111.8 396.0,115.3 638.5,118.6 1046.5,136.9 1046.5,141.4 1321.2,141.1 1328.5,710.1 1302.1,710.0 1296.8,1899.8 1292.0,1897.7 1195.0,1871.8 1139.0,1867.2 1140.8,1915.1 1127.5,1915.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0163/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[384.0,710.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6275555,39.3042555]}},{"type":"Feature","properties":{"resourceCoords":[124.0,710.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6279952,39.3039294]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0164/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p164","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0164/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0164","type":"ImageService3","width":1439,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"119.9,112.2 399.3,112.5 399.2,104.4 1290.0,89.8 1294.1,697.8 1308.9,1599.7 1309.2,1895.5 719.5,1917.2 715.2,1948.1 184.4,1951.5 181.2,1950.0 126.8,1927.5 111.3,719.2 138.2,718.9 119.9,112.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0164/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1005.0,1311.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.623563,39.3057156]}},{"type":"Feature","properties":{"resourceCoords":[419.0,1930.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6235848,39.3041944]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0165/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p165","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0165/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0165","type":"ImageService3","width":1432,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"122.3,1604.1 119.3,705.0 123.2,98.9 718.4,98.9 1008.8,93.5 1266.1,93.6 1294.3,89.4 1294.8,649.7 1277.1,696.5 1431.0,693.7 1431.0,835.3 1367.0,862.3 1350.8,1273.1 1398.5,1331.0 1294.2,1398.3 1294.3,1380.5 1294.3,1370.2 549.9,1944.2 118.9,1922.5 118.7,1899.0 122.3,1604.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0165/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[706.0,701.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62305697193419,39.307598047151814]}},{"type":"Feature","properties":{"resourceCoords":[997.0,1300.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62161397221861,39.307179629411685]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0166/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p166","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.75"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0166/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0166","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"119.0,644.7 220.3,643.5 182.9,439.9 156.1,334.6 125.2,180.3 117.6,54.5 116.7,11.9 133.3,11.8 158.1,11.5 220.7,58.2 221.4,10.8 226.4,10.7 244.7,10.5 301.4,73.0 618.4,61.9 886.0,205.8 1198.8,233.2 1295.7,186.1 1348.4,288.2 1396.5,1041.5 1365.3,1562.4 1265.5,1839.4 1132.5,1948.0 508.1,1926.0 271.6,2028.5 270.3,1883.2 112.3,1887.5 130.1,1839.3 124.2,1264.3 119.0,644.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0166/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[531.0,1863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6214538,39.3088378]}},{"type":"Feature","properties":{"resourceCoords":[531.0,1260.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6223811,39.309607]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0167/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p167","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0167/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0167","type":"ImageService3","width":1432,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"157.7,1982.3 64.0,1903.1 44.4,1677.6 98.3,669.4 41.1,285.0 109.0,78.1 1361.8,122.6 1361.8,131.1 1360.8,698.5 1368.8,1299.2 1364.0,1899.0 620.0,1899.0 619.9,1914.6 155.3,2033.5 157.7,1982.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0167/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[620.0,1899.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6493016,39.299759]}},{"type":"Feature","properties":{"resourceCoords":[1364.0,1899.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6475692,39.2998207]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0168/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p168","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0168/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0168","type":"ImageService3","width":1421,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"31.2,127.5 1267.4,124.4 1374.2,122.8 1375.0,733.2 1378.0,1309.0 1378.0,1904.0 38.8,1908.1 41.6,1313.5 31.9,718.2 31.2,155.8 31.2,127.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0168/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1378.0,1309.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6444831,39.3010145]}},{"type":"Feature","properties":{"resourceCoords":[1378.0,1904.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6444231,39.2999327]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0169/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p169","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0169/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0169","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"100.0,1316.0 96.1,736.6 94.4,122.5 397.1,120.4 702.7,121.5 1305.2,119.1 1310.6,1912.0 100.8,1914.7 100.0,1316.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0169/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[403.0,1316.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6437755,39.3010372]}},{"type":"Feature","properties":{"resourceCoords":[706.0,1316.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6430679,39.3010599]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0170/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p170","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"},{"label":"confidence","value":"1.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0170/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0170","type":"ImageService3","width":1448,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"131.7,127.0 738.3,122.2 1040.0,118.4 1344.5,117.6 1350.0,604.0 1351.6,1349.3 1354.6,1914.5 143.9,1921.7 131.7,127.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0170/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[744.0,1342.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6402491,39.3011156]}},{"type":"Feature","properties":{"resourceCoords":[1350.0,604.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6389001,39.3024893]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0171/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p171","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0171/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0171","type":"ImageService3","width":1446,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"91.3,1352.0 92.7,609.5 89.2,125.0 128.7,124.9 162.3,124.5 165.5,124.2 402.5,123.9 991.3,122.1 1185.7,638.1 1323.7,1038.3 1349.0,1120.0 1325.4,1164.6 1309.8,1232.6 1310.0,1360.0 1310.3,1666.6 1310.6,1913.2 92.0,1915.0 91.3,1352.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0171/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[700.0,1356.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6374049,39.3011825]}},{"type":"Feature","properties":{"resourceCoords":[92.0,1915.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6387741,39.3001235]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0172__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p172 [1]","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"21"},{"label":"confidence","value":"0.99"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5824.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0172__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0172","type":"ImageService3","width":1456,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"113.5,1240.7 230.2,1333.8 107.6,1642.7 24.1,1863.5 33.0,1864.0 33.5,1910.0 41.8,1917.3 54.1,1928.1 306.0,1928.0 872.8,1929.5 1408.1,1928.5 1409.6,1322.8 1414.1,121.9 749.0,120.8 697.0,98.3 500.1,615.5 337.7,1008.0 302.4,1086.3 255.1,1104.1 198.1,1144.9 113.5,1240.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0172__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1128.0,1928.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6331555,39.3015972]}},{"type":"Feature","properties":{"resourceCoords":[306.0,1928.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6345392,39.3005673]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0172__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p172 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.80"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2499.6"},{"label":"split_canvas_h","value":"3196.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0172__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0172","type":"ImageService3","width":1456,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"298.9,660.0 390.7,414.8 510.0,111.2 398.1,22.6 392.9,22.7 196.1,247.3 36.0,430.0 298.9,660.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0172__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[298.9,660.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6350899,39.3002472]}},{"type":"Feature","properties":{"resourceCoords":[36.0,430.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6359205,39.3002189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0173/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p173","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0173/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0173","type":"ImageService3","width":1446,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"220.6,1323.6 224.0,116.2 1199.0,117.9 1203.8,246.9 1203.3,723.2 1197.6,1325.0 1248.3,1325.1 1307.4,1932.0 1218.8,1932.0 1204.0,1932.0 219.7,1932.5 220.6,1323.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0173/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[876.0,722.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6335308,39.3043345]}},{"type":"Feature","properties":{"resourceCoords":[1204.0,1932.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6310343,39.3031736]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0174/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p174","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0174/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0174","type":"ImageService3","width":1456,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1336.0,122.1 1375.3,122.1 1373.8,723.0 1369.5,723.0 1381.0,1219.0 1372.8,1219.0 1371.2,1931.2 415.6,1932.6 239.3,1932.8 179.7,1326.8 129.0,1326.8 134.2,725.7 134.2,250.1 129.2,121.2 1336.0,122.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0174/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[906.0,723.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6316882,39.3057052]}},{"type":"Feature","properties":{"resourceCoords":[136.0,1933.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6310343,39.3031736]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0175/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p175","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.70"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0175/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0175","type":"ImageService3","width":1416,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1012.4,113.3 1262.2,112.6 1269.0,112.5 1277.5,709.7 1274.5,709.8 1279.1,1206.2 1320.0,1212.2 1415.0,1247.9 1415.0,1322.1 1269.5,1322.4 1280.5,1941.6 1005.1,1943.2 1005.2,1938.8 596.0,1922.4 352.9,1920.3 352.9,1916.9 83.0,1918.0 81.8,1918.0 80.0,1209.1 88.2,1209.1 74.3,715.4 78.7,715.3 77.4,117.2 1012.4,113.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0175/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6321866,39.3071281]}},{"type":"Feature","properties":{"resourceCoords":[1416.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6297865,39.3088906]}},{"type":"Feature","properties":{"resourceCoords":[1416.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6264613,39.3061796]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6288614,39.3044171]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0176/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p176","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0176/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0176","type":"ImageService3","width":1451,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"411.8,105.6 1216.1,111.0 1272.0,105.0 1303.6,127.9 1250.3,707.5 1356.3,706.5 1349.2,1265.8 1279.5,1312.8 1269.8,1910.4 389.6,1904.5 389.5,1912.5 113.5,1905.8 109.4,1314.6 255.0,1315.8 255.8,1241.6 161.2,1204.9 120.2,1198.4 121.0,701.5 124.0,701.5 121.9,103.6 411.8,105.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0176/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[397.0,1306.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6274394,39.3073467]}},{"type":"Feature","properties":{"resourceCoords":[1272.0,105.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6279249,39.3100046]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0177/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p177","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0177/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0177","type":"ImageService3","width":1439,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"233.1,23.0 486.0,23.0 660.7,166.8 1278.7,354.6 1310.6,316.0 1320.8,347.5 1370.3,500.6 1374.0,778.8 1351.7,779.0 1350.9,824.3 1251.2,749.4 1251.5,768.4 1291.2,779.5 1251.7,779.8 1252.4,820.5 1259.2,940.8 1288.3,1088.4 1313.7,1189.2 1348.8,1383.9 1251.9,1384.8 1255.1,1977.1 1227.4,1981.4 974.9,1983.0 690.0,1990.0 106.0,1993.7 106.0,1402.0 174.2,1354.3 172.2,800.5 67.3,803.2 110.7,228.7 79.0,206.5 233.1,23.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0177/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[106.0,1402.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6259491,39.3084477]}},{"type":"Feature","properties":{"resourceCoords":[690.0,1990.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.623996,39.3083947]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0178/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p178","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0178/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0178","type":"ImageService3","width":1444,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"225.1,1811.0 114.7,1750.7 33.4,236.0 57.7,46.9 242.4,21.0 250.6,21.0 328.6,38.5 451.4,43.2 844.5,45.1 1320.0,38.2 1364.7,113.9 1397.7,1184.5 1374.3,2044.2 1365.1,2044.3 1347.6,2044.3 1347.8,1924.2 763.7,1865.5 763.6,1919.5 222.4,1853.4 225.1,1811.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0178/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[423.0,690.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61866808368482,39.309738026134646]}},{"type":"Feature","properties":{"resourceCoords":[1059.0,690.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61715353602592,39.30979810802427]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0179/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p179","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0179/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0179","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1355.0,2046.5 103.7,2005.2 122.7,1946.6 51.6,1861.2 32.2,1105.2 100.2,61.5 750.6,49.2 750.6,64.8 1355.0,63.1 1355.0,2026.5 1355.0,2046.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0179/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[612.0,822.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6496215,39.3051724]}},{"type":"Feature","properties":{"resourceCoords":[1355.0,822.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.647889,39.3052308]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0180/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p180","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0180/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0180","type":"ImageService3","width":1444,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1376.3,61.8 1412.0,62.0 1412.0,126.0 1412.3,126.0 1412.3,128.0 1412.0,128.0 1414.0,549.9 1410.2,2022.1 1302.8,2023.4 59.2,2021.9 65.0,61.7 1376.3,61.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0180/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1396.0,824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64477520149083,39.305334637005124]}},{"type":"Feature","properties":{"resourceCoords":[1396.0,1427.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64470959414716,39.304245069299085]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0181/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p181","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0181/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0181","type":"ImageService3","width":1425,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"705.4,2016.0 396.3,2014.4 90.4,2016.0 89.3,527.4 85.7,34.0 89.0,34.0 133.9,34.5 499.1,31.5 704.5,32.1 1278.7,29.5 1314.8,71.7 1316.5,596.4 1313.0,804.0 1314.4,2014.8 705.4,2016.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0181/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1313.0,804.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6419088,39.3054316]}},{"type":"Feature","properties":{"resourceCoords":[89.0,34.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.644813,39.3067131]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0182/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p182","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0182/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0182","type":"ImageService3","width":1444,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1341.7,1991.5 1037.5,1990.8 736.2,1993.3 130.6,1995.2 128.0,798.0 131.3,592.8 129.1,74.0 519.0,527.5 1105.5,360.5 1301.5,586.3 1323.6,620.5 1340.2,681.2 1340.3,755.9 1340.3,798.1 1341.6,1904.0 1415.0,1987.2 1415.0,1988.0 1415.8,1988.2 1418.2,1990.8 1415.0,1991.0 1415.0,1991.2 1381.2,1991.3 1341.7,1991.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0182/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[128.0,798.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6419088,39.3054316]}},{"type":"Feature","properties":{"resourceCoords":[1037.0,798.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6397853,39.3055011]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0183__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p183 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5716.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0183__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0183","type":"ImageService3","width":1429,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1364.5,1284.2 1374.9,744.6 1383.0,134.7 1322.5,164.2 1280.0,234.3 1187.8,476.4 1129.5,629.4 1108.8,683.7 1093.0,725.5 972.8,628.0 772.5,451.1 753.8,411.1 744.0,422.3 742.1,424.4 1.0,1265.6 1.0,1385.7 180.9,1543.7 631.0,1939.0 683.6,1961.8 1358.0,1962.7 1364.5,1284.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0183__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1360.0,1212.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6367933923956,39.30527539119522]}},{"type":"Feature","properties":{"resourceCoords":[720.0,427.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6391094119476,39.30549351602514]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0183__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p183 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3630.8"},{"label":"split_canvas_h","value":"4661.2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0183__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0183","type":"ImageService3","width":1429,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"12.9,489.0 12.7,519.2 195.0,860.5 218.6,891.8 562.2,500.8 626.0,450.5 667.8,444.4 711.5,397.2 758.8,281.0 771.6,244.5 735.5,231.0 691.3,212.8 531.5,149.5 437.6,99.6 294.6,23.4 166.9,356.1 147.1,391.9 101.0,435.4 13.0,482.5 12.9,489.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0183__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[149.9,769.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63833961006546,39.30555479525709]}},{"type":"Feature","properties":{"resourceCoords":[215.9,898.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63800269338017,39.305561428973775]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0184/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p184","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0184/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0184","type":"ImageService3","width":1444,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"243.8,1249.1 250.8,713.6 255.2,108.3 1209.7,105.7 1217.5,1918.8 241.6,1922.5 243.8,1249.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0184/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[555.0,1314.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63604315135768,39.30548855976031]}},{"type":"Feature","properties":{"resourceCoords":[1217.0,117.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63684195871204,39.30786630798355]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0185/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p185","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"24"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0185/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0185","type":"ImageService3","width":1429,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"390.0,114.0 877.9,115.9 1188.9,112.2 1281.1,125.3 1295.3,136.2 1316.8,188.6 1315.5,720.9 1311.8,1256.9 1305.9,1268.0 1301.0,1924.9 1269.4,1924.8 63.3,1921.0 68.1,113.0 390.0,114.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0185/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[840.0,1320.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6336293,39.3072701]}},{"type":"Feature","properties":{"resourceCoords":[390.0,114.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6363308,39.3082728]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0186/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p186","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"27"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0186/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0186","type":"ImageService3","width":1416,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"168.3,96.7 90.6,134.4 96.2,138.6 118.2,190.7 121.0,721.2 121.8,1255.4 115.9,1266.5 116.3,1921.3 124.0,1921.2 1059.6,1916.4 1306.5,1915.4 1271.4,1312.9 1261.8,1312.9 1276.5,1095.2 1278.3,710.9 1305.6,710.4 1319.4,521.1 1338.9,537.6 1377.7,455.1 1310.0,397.9 1269.6,363.6 1297.6,303.9 1315.9,149.1 1316.3,145.1 962.8,104.6 926.3,73.8 837.8,1.0 734.1,1.0 731.5,21.3 693.0,1.0 691.5,1.0 704.6,32.0 677.9,65.2 657.5,121.3 622.2,110.8 386.5,110.8 197.6,106.1 168.3,96.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0186/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[384.0,720.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6333553,39.3089697]}},{"type":"Feature","properties":{"resourceCoords":[384.0,1920.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.631428,39.3073954]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0187__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p187 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5700.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0187__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0187","type":"ImageService3","width":1425,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"37.8,372.4 52.0,371.0 95.0,1092.7 718.5,1081.5 770.5,1106.4 770.5,1106.7 770.3,1133.4 859.2,1222.5 795.5,1582.5 831.0,1888.5 763.8,1889.0 763.7,1893.8 763.6,1899.4 763.6,1904.5 1362.7,1908.8 1380.1,152.4 1333.8,169.4 1005.6,175.3 1007.3,133.2 636.2,133.3 635.8,179.5 39.6,175.0 37.8,372.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0187__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1000.0,1219.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64890565367018,39.30781946216083]}},{"type":"Feature","properties":{"resourceCoords":[1000.0,1910.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64881876394672,39.30656249682594]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0188/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p188","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0188/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0188","type":"ImageService3","width":1412,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"45.9,159.4 804.2,141.6 1388.2,133.6 1396.7,133.4 1398.2,538.9 1393.5,1918.0 1385.0,1917.8 1346.2,1917.6 42.0,1918.6 45.9,159.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0188/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1087.0,1224.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6455872,39.3079489]}},{"type":"Feature","properties":{"resourceCoords":[1087.0,1918.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6455126,39.306688]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0189/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p189","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0189/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0189","type":"ImageService3","width":1424,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"23.0,544.0 21.4,135.6 303.3,131.1 433.5,129.8 683.3,31.8 683.1,19.5 992.7,19.3 1079.3,121.3 1171.5,212.2 1404.1,499.4 1423.0,521.4 1423.0,550.7 1423.0,565.4 1411.5,575.0 997.3,920.8 810.4,1076.8 604.0,1249.0 811.0,1490.8 1076.5,1800.6 1188.5,1931.3 619.6,1932.5 416.1,1931.4 54.2,1933.5 18.4,1933.0 23.0,544.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0189/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[604.0,1249.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6435006,39.3079957]}},{"type":"Feature","properties":{"resourceCoords":[1445.0,547.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6416148,39.3093312]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0190/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p190","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0190/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0190","type":"ImageService3","width":1412,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"155.0,1038.4 153.9,865.7 153.3,754.1 151.6,456.2 149.8,136.8 419.5,138.8 431.6,138.8 663.8,140.5 1205.3,144.2 1249.0,144.6 1247.2,354.4 1245.0,933.5 1242.2,1261.3 1239.9,1924.9 1153.5,1924.8 981.6,1924.5 714.9,1894.0 715.3,1949.8 157.7,1695.0 155.1,1093.6 155.0,1038.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0190/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[706.0,941.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6412803,39.3076161]}},{"type":"Feature","properties":{"resourceCoords":[433.0,1548.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6407853,39.3064814]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0191/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p191","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0191/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0191","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"332.3,21.0 619.0,28.3 658.0,82.2 668.7,192.8 788.9,50.9 1435.0,607.9 1435.0,655.6 1418.5,673.6 1334.0,765.8 1317.9,803.0 1312.6,1437.1 1312.4,1998.5 992.9,1997.3 47.9,1993.1 25.1,2001.8 49.5,1942.8 52.4,1780.1 66.8,1122.2 75.7,797.2 88.5,223.0 94.0,21.0 332.3,21.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0191/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[669.0,800.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6393669,39.3090289]}},{"type":"Feature","properties":{"resourceCoords":[1313.0,1400.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6373033,39.3090555]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0192/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p192","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0192/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0192","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"243.3,946.2 491.0,362.6 520.1,334.4 633.5,281.6 688.6,255.9 730.0,235.7 1163.4,412.3 1172.0,396.8 1291.5,631.1 1427.5,889.5 1427.5,900.6 1241.7,1216.1 1202.3,1231.6 1425.1,1675.0 1423.3,1981.9 1411.5,1988.2 1371.0,2031.7 1342.8,2008.3 1126.8,1916.6 955.4,1838.9 932.2,1818.9 846.3,1823.2 840.9,1814.0 761.5,1766.8 474.9,1651.9 28.3,1464.7 243.3,946.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0192/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1148.0,1189.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63587380570168,39.310335154375394]}},{"type":"Feature","properties":{"resourceCoords":[27.0,1479.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6363011120129,39.30826024439979]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0193/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p193","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0193/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0193","type":"ImageService3","width":1432,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"50.8,1006.3 490.5,611.8 484.6,604.5 660.2,482.9 955.5,249.8 972.5,270.3 1125.8,165.4 1125.0,190.4 1212.0,169.7 1211.9,172.6 1201.3,535.5 1185.4,1103.6 1162.8,1896.9 1162.0,1942.0 1159.8,2053.7 1133.3,2056.8 1004.2,1893.3 767.5,1886.2 728.3,1847.6 234.7,1234.6 52.6,1008.5 50.8,1006.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0193/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[522.0,639.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6308400904969,39.309356857624785]}},{"type":"Feature","properties":{"resourceCoords":[789.0,1890.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6279202686333,39.31004469885561]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0194__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p194 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.99"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5796.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0194__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0194","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"749.0,1981.0 749.2,1783.8 1345.0,1783.0 1345.0,1736.9 1344.2,1432.7 1338.3,577.4 1372.7,577.3 1304.0,159.1 1039.5,110.2 892.5,251.8 758.7,260.6 738.4,548.6 144.3,581.3 186.3,1961.1 465.6,2010.7 749.0,1981.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0194__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[750.0,1160.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6513585,39.310761]}},{"type":"Feature","properties":{"resourceCoords":[155.0,1160.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6527588,39.3107125]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0195/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p195","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0195/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0195","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"966.6,1778.5 108.5,1781.0 108.5,1746.5 115.8,1745.3 111.5,1373.5 97.2,1353.0 109.5,1342.0 110.1,1075.2 110.2,693.2 107.5,325.3 107.5,306.2 107.6,270.2 672.5,269.9 1272.0,273.7 1287.5,1032.9 1304.8,1079.3 1312.2,1408.3 1270.0,1406.8 1271.9,1778.9 966.6,1778.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0195/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[693.0,1779.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6499638,39.3108094]}},{"type":"Feature","properties":{"resourceCoords":[1295.0,1779.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.649895,39.3097171]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0196__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p196 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.93"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5796.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0196__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0196","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"780.0,1907.0 1069.3,1906.6 1198.9,1907.2 1423.3,1822.7 1425.2,1517.8 1355.9,1314.6 1275.8,1212.1 1035.9,914.1 800.4,628.5 701.0,498.0 345.2,72.6 319.7,123.7 213.4,246.6 209.8,574.1 212.4,705.6 174.5,740.0 174.9,740.0 211.0,740.4 204.9,1306.2 194.3,1906.8 780.0,1907.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0196__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[780.0,1907.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6449973,39.3099551]}},{"type":"Feature","properties":{"resourceCoords":[701.0,498.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64538,39.3124971]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0197/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p197","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0197/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0197","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"163.7,1507.9 144.6,1139.8 142.4,976.5 109.9,425.3 672.0,316.4 901.0,276.0 1239.8,212.4 1260.3,312.4 1269.5,529.2 1290.7,917.5 1301.5,1176.0 1334.1,1810.1 1035.7,1820.2 746.5,1833.5 589.3,1844.4 236.5,1860.5 179.0,1888.5 163.7,1507.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0197/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[706.0,941.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6444168,39.3132061]}},{"type":"Feature","properties":{"resourceCoords":[901.0,276.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6450706,39.3143625]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0198__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p198 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3053.6"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0198__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0198","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"88.2,202.1 109.2,303.8 119.0,524.3 141.3,919.1 153.0,1182.1 187.4,1826.9 504.0,1807.5 696.7,1343.2 698.5,1302.7 762.4,1303.3 762.4,1224.2 735.4,1208.1 721.9,107.7 485.5,38.0 312.8,80.3 253.2,30.6 248.8,169.1 88.2,202.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0198__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[706.4,1804.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64108153945641,39.3133545166649]}},{"type":"Feature","properties":{"resourceCoords":[706.4,101.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64360757537138,39.31569580504943]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0198__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p198 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.98"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3053.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2742.4"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0198__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0198","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"813.4,1875.0 1403.3,1873.3 1404.2,1741.0 1379.0,110.9 1360.7,76.9 1287.4,104.0 1081.2,31.4 809.9,62.8 813.4,331.4 813.4,1875.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0198__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[813.4,743.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6393658,39.3141944]}},{"type":"Feature","properties":{"resourceCoords":[813.4,1875.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6377616,39.3125601]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0199/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p199","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0199/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0199","type":"ImageService3","width":1431,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"47.1,1611.1 63.3,1578.5 52.3,1095.8 26.5,1060.7 17.0,735.2 16.6,433.1 41.4,446.7 87.5,349.2 1029.0,297.9 1225.8,96.0 1352.7,108.7 1366.3,1520.0 1370.2,1523.4 1362.6,1659.4 1203.9,1688.0 863.6,1744.0 633.8,1779.3 69.2,1875.7 47.1,1611.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0199/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[844.0,1755.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64508841263378,39.314323919036276]}},{"type":"Feature","properties":{"resourceCoords":[844.0,353.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64726395412033,39.316243139448495]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0200/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p200","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0200/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0200","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"575.6,1821.9 231.4,1654.7 231.5,1347.9 234.6,975.3 233.7,827.9 238.3,88.8 1309.2,96.5 1143.8,345.9 995.2,563.5 1013.1,563.6 1066.1,1029.5 1103.8,1056.1 1131.9,1076.8 1085.5,1082.8 600.2,1786.0 575.6,1821.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0200/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[237.0,984.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63941991201416,39.31156860064067]}},{"type":"Feature","properties":{"resourceCoords":[437.0,2049.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64110371503568,39.31010055667761]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0201/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p201","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0201/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0201","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"135.7,1721.9 108.7,1753.9 107.4,1753.9 135.7,1720.3 135.4,1691.5 142.5,1322.9 130.6,1194.3 129.9,1035.6 21.1,943.9 21.9,715.8 130.1,426.0 133.0,295.8 192.1,270.4 547.5,271.3 706.0,268.0 997.3,268.6 1297.6,272.8 1301.3,1445.6 995.6,1419.0 799.2,1747.7 832.8,1775.3 715.4,1920.1 702.3,1809.5 662.1,1756.3 374.7,1755.1 135.9,1760.1 136.0,1754.0 135.7,1721.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0201/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[706.0,268.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6429939,39.3120076]}},{"type":"Feature","properties":{"resourceCoords":[136.0,1754.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6416148,39.3093312]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0202/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p202","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0202/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0202","type":"ImageService3","width":1452,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"28.5,712.9 338.9,685.4 515.6,224.2 516.3,184.3 579.1,183.2 578.4,106.4 674.1,160.2 1404.1,89.7 1402.5,356.9 1373.5,1892.3 638.9,1881.0 492.3,1880.7 122.0,1874.2 28.5,712.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0202/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[499.0,1885.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63938865176836,39.3115829899055]}},{"type":"Feature","properties":{"resourceCoords":[1374.0,1885.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63777131225544,39.31257120970548]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0203__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p203 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.99"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5688.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0203__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0203","type":"ImageService3","width":1422,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1217.0,1912.6 1215.0,1295.4 1216.0,1016.0 1243.4,1016.0 1421.0,592.9 1421.0,563.1 1421.0,490.5 1391.5,470.4 1399.2,189.0 1344.5,64.6 735.5,32.0 638.5,33.6 51.1,38.3 59.4,1103.0 53.0,1473.6 26.6,1506.4 481.3,1810.8 535.4,1906.3 648.0,1978.0 728.2,1977.2 824.9,2039.8 864.3,2066.0 1217.2,2066.0 1217.0,1912.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0203__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1216.0,1016.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6341855,39.3124107]}},{"type":"Feature","properties":{"resourceCoords":[1216.0,28.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.635583,39.3138499]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0204/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p204","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0204/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0204","type":"ImageService3","width":1427,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1362.8,1956.4 1339.0,1549.0 1335.0,743.4 1349.1,249.1 1355.3,104.0 1016.6,32.9 153.2,60.1 116.7,307.6 1.0,306.1 1.0,338.4 37.2,392.7 126.0,852.0 102.8,867.5 260.1,1105.0 611.0,1627.4 700.3,1760.8 787.3,1892.2 804.7,1956.7 858.3,1956.7 950.9,1956.5 1326.0,1956.5 1362.8,1956.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0204/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1334.0,778.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6313579,39.3126936]}},{"type":"Feature","properties":{"resourceCoords":[1334.0,1359.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6312828,39.311657]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0205/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p205","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0205/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0205","type":"ImageService3","width":1410,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"583.4,1956.8 42.2,1956.4 19.5,1555.7 17.8,979.9 17.1,763.2 32.0,277.1 38.4,134.5 78.9,33.5 628.6,43.0 1058.6,152.6 1162.3,302.4 1195.2,378.8 1147.6,442.6 1389.8,804.3 1395.8,1373.0 1389.8,1957.7 583.4,1956.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0205/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1381.0,790.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62815911992375,39.31285036204325]}},{"type":"Feature","properties":{"resourceCoords":[1381.0,1667.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62803995075338,39.3112596413693]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0206/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p206","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0206/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0206","type":"ImageService3","width":1438,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"91.7,123.4 598.1,142.8 747.9,91.5 992.1,231.3 1336.2,262.6 1364.7,1641.9 1409.1,1670.5 1408.9,1701.2 1408.8,1722.5 788.6,1977.6 398.8,1976.3 351.4,1976.3 364.0,1372.0 364.0,784.0 117.6,407.4 167.4,341.9 134.3,262.6 28.8,106.6 91.7,123.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0206/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[364.0,784.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6281366,39.3128253]}},{"type":"Feature","properties":{"resourceCoords":[364.0,1372.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6280452,39.3117944]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0207__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p207 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.46"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5744.0"},{"label":"split_canvas_h","value":"4146.4"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0207__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0207","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"757.0,73.7 176.8,78.0 177.3,194.2 75.0,195.0 119.7,382.3 63.9,440.3 82.1,980.8 321.1,1030.7 1205.5,1031.0 1206.0,1026.6 1239.9,1026.6 1321.2,959.3 1334.5,93.7 757.0,73.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0207__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61939816920518,39.315493875168954]}},{"type":"Feature","properties":{"resourceCoords":[1436.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61923291101238,39.312927915739046]}},{"type":"Feature","properties":{"resourceCoords":[1436.0,1036.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62161114499895,39.31283493203629]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1036.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62177640319176,39.3154008914662]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0208/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p208","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0208/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0208","type":"ImageService3","width":1438,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"154.8,1732.6 186.7,1189.8 148.8,865.1 148.8,840.9 153.4,176.9 1339.0,177.2 1380.5,1144.5 1340.6,1808.8 1285.2,1939.2 804.4,1947.2 407.0,1946.3 282.8,1941.9 146.8,1911.7 154.8,1732.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0208/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[725.0,726.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6180706,39.3131847]}},{"type":"Feature","properties":{"resourceCoords":[1307.0,726.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6166997,39.3132365]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0209/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p209","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0209/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0209","type":"ImageService3","width":1413,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"89.8,1317.7 41.0,325.4 56.0,53.0 101.1,28.0 113.0,28.0 113.4,25.1 130.7,25.2 131.0,28.0 150.0,28.0 150.3,25.4 1316.8,34.9 1311.2,454.3 1385.9,842.4 1374.4,1454.7 1302.6,1687.0 1314.5,2009.7 132.1,2002.1 130.8,1434.7 18.0,1434.7 17.7,1334.6 89.8,1317.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0209/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[998.0,1439.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6175088,39.3152501]}},{"type":"Feature","properties":{"resourceCoords":[708.0,30.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6183763,39.3177948]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0210__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p210 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.98"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5764.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0210__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0210","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1361.2,1863.3 1382.5,498.4 1356.9,316.9 1345.0,316.9 1345.6,237.1 1324.2,84.9 848.5,57.6 799.6,129.4 580.3,184.0 473.9,177.9 473.5,271.4 473.7,310.6 330.8,308.6 177.9,878.6 176.8,1013.4 46.4,1009.5 1.0,1014.5 1.0,1079.6 141.0,1083.6 62.6,1541.5 139.1,1850.5 1361.2,1863.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0210__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[754.0,1020.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6184708,39.3193094]}},{"type":"Feature","properties":{"resourceCoords":[1046.0,1860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6176756,39.3178203]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0211/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p211","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0211/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0211","type":"ImageService3","width":1404,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1368.2,1937.5 889.3,1936.6 263.4,2041.4 86.0,2002.0 112.2,141.2 465.4,52.1 1316.5,51.3 1358.0,112.0 1379.2,110.1 1368.2,1937.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0211/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[764.0,1280.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6232342,39.3192122]}},{"type":"Feature","properties":{"resourceCoords":[764.0,718.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6239239,39.3200765]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0212/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p212","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0212/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0212","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"506.3,1916.2 145.1,1914.7 159.8,91.3 610.5,52.7 1263.8,186.2 1266.9,407.2 1357.9,472.4 1357.7,1348.7 1412.0,1382.4 1411.3,1493.3 1393.4,1526.8 1268.8,1456.8 862.1,1884.6 796.8,2002.5 684.0,1936.8 640.8,1919.2 609.8,1976.2 506.3,1916.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0212/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[793.0,1266.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6207375,39.3203917]}},{"type":"Feature","properties":{"resourceCoords":[793.0,112.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6221615,39.322168]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0213__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p213 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.43"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3162.0"},{"label":"split_canvas_w","value":"2634.4"},{"label":"split_canvas_h","value":"5106.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0213__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0213","type":"ImageService3","width":1402,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"18.0,946.6 35.7,1494.3 122.6,1922.8 453.2,1930.2 590.0,1804.7 575.2,899.5 398.3,928.7 397.0,1003.2 211.4,1004.6 37.7,910.6 18.0,946.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0213__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,790.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62877785000823,39.32404940569579]}},{"type":"Feature","properties":{"resourceCoords":[658.6,790.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62724786668363,39.323995347205326]}},{"type":"Feature","properties":{"resourceCoords":[658.6,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62738233425397,39.321685708657654]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62891231757855,39.32173976714812]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0213__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p213 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.82"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5608.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0213__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0213","type":"ImageService3","width":1402,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"703.5,1965.4 725.1,1930.6 892.0,2034.8 1076.2,2044.4 1081.9,1970.0 1259.2,1951.3 1287.1,1299.4 1266.8,1150.0 1147.8,1133.5 1161.3,164.5 1124.7,119.2 297.3,122.5 207.6,143.7 266.7,711.1 422.1,787.8 512.6,714.5 676.5,716.8 735.0,799.6 703.5,1965.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0213__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63046216356537,39.32730424438293]}},{"type":"Feature","properties":{"resourceCoords":[1402.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62718306794618,39.327339776381855]}},{"type":"Feature","properties":{"resourceCoords":[1402.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62711535901349,39.32359942262293]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63039445463268,39.323563890624]}},{"type":"Feature","properties":{"resourceCoords":[568.0,573.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6291149,39.3262809]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0215__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p215 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5668.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0215__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0215","type":"ImageService3","width":1417,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"66.6,643.8 67.0,1135.0 72.7,1633.8 151.7,1619.2 236.8,2057.0 261.5,2056.8 253.5,1919.5 561.5,1851.7 585.1,1665.7 585.5,1665.2 585.5,1664.5 586.8,1663.9 702.6,1536.5 1205.7,1401.9 1298.8,1370.4 1383.3,969.9 1265.6,470.4 1264.3,37.2 65.2,42.0 66.6,643.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0215__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6311587163433,39.33128820235854]}},{"type":"Feature","properties":{"resourceCoords":[1417.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63100376084653,39.32871663139359]}},{"type":"Feature","properties":{"resourceCoords":[1417.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63581936151226,39.32854055696519]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63597431700903,39.33111212793014]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0216/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p216","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0216/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0216","type":"ImageService3","width":1416,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"28.9,109.7 412.7,109.8 811.0,112.5 1350.5,111.1 1323.1,129.4 1370.0,900.8 1341.0,1572.0 1268.5,1819.4 978.7,1848.0 922.5,1793.2 672.0,1779.7 343.4,1843.2 92.7,1696.5 40.2,1301.9 24.6,1301.8 28.9,109.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0216/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[43.0,822.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6311251083826,39.32986777840417]}},{"type":"Feature","properties":{"resourceCoords":[799.0,822.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62934162838977,39.32994254242541]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0217/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p217","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0217/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0217","type":"ImageService3","width":1424,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1304.3,315.0 1306.6,1451.1 1370.1,1439.6 1377.5,1477.1 1423.0,1719.4 1362.4,1730.3 1300.9,1970.6 1152.2,1963.3 1014.8,2038.1 399.1,2030.0 143.9,1935.8 40.3,1478.0 45.4,320.7 118.6,190.8 70.4,114.2 475.1,37.7 1099.0,31.3 1096.3,18.4 1303.7,14.3 1304.3,315.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0217/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1005.0,1520.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63564215039135,39.33318401166413]}},{"type":"Feature","properties":{"resourceCoords":[880.0,314.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63282326495218,39.333519225907466]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0218/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p218","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0218/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0218","type":"ImageService3","width":1439,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1358.8,1708.5 1290.5,1884.2 868.3,1877.6 633.3,1977.6 494.3,1940.7 288.6,1758.6 252.2,1756.8 314.1,1515.1 375.7,1504.0 329.7,1260.5 322.4,1222.8 258.9,1234.2 258.7,91.6 518.2,92.9 835.7,86.4 1158.1,83.7 1156.6,573.6 1160.3,1071.0 1239.2,1056.7 1322.4,1493.7 1347.0,1493.6 1358.8,1708.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0218/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63259322917408,39.33322733533048]}},{"type":"Feature","properties":{"resourceCoords":[1439.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63242237640476,39.330609227805716]}},{"type":"Feature","properties":{"resourceCoords":[1439.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.637250296005,39.33041806260476]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63742114877432,39.33303617012952]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0219/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p219","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0219/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0219","type":"ImageService3","width":1409,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1218.2,620.5 1216.5,1022.3 1217.2,1409.4 1215.9,2008.7 893.9,2011.2 576.8,2017.5 317.7,2016.0 317.9,1714.0 111.0,1717.8 60.5,1467.1 148.2,1344.9 159.7,115.6 293.4,107.6 311.2,48.9 679.7,82.8 1059.8,35.2 1192.7,42.0 1215.5,76.2 1218.2,620.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0219/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6280995184723,39.3335158772065]}},{"type":"Feature","properties":{"resourceCoords":[1409.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62792998867909,39.33094893338219]}},{"type":"Feature","properties":{"resourceCoords":[1409.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63276436787339,39.33075521062049]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6329338976666,39.3333221544448]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0220__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p220 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.18"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3758.0"},{"label":"split_canvas_w","value":"2564.0"},{"label":"split_canvas_h","value":"4510.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0220__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0220","type":"ImageService3","width":1432,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"577.4,1853.7 518.3,978.0 382.1,1033.5 399.9,1001.0 54.1,1082.5 97.0,1776.9 285.8,1944.6 577.4,1853.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0220__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,939.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63243233153861,39.340686937713315]}},{"type":"Feature","properties":{"resourceCoords":[641.0,939.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63170605331715,39.34077732690107]}},{"type":"Feature","properties":{"resourceCoords":[641.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63150183006107,39.339781883781214]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63222810828253,39.33969149459346]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0221__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p221 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.88"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1825.2"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0221__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0221","type":"ImageService3","width":1409,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"453.5,1905.3 422.4,174.8 393.6,58.0 225.1,43.2 79.7,160.9 75.3,1832.5 126.0,1918.2 352.4,1939.7 453.5,1905.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0221__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.68743729846571,39.344661921775604]}},{"type":"Feature","properties":{"resourceCoords":[456.3,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.68670210167019,39.34525981014243]}},{"type":"Feature","properties":{"resourceCoords":[456.3,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.68319918664616,39.342681439339195]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.68393438344168,39.34208355097237]}},{"type":"Feature","properties":{"resourceCoords":[433.3,210.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6863833,39.3449677]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0223/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p223","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0223/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0223","type":"ImageService3","width":1435,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"705.2,130.9 1335.6,131.6 1335.2,207.8 1330.6,207.2 1316.3,1950.3 659.9,2023.5 59.5,1995.8 49.9,295.9 109.6,114.0 289.1,41.0 556.6,46.2 705.2,130.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0223/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.67075986119976,39.31140985195565]}},{"type":"Feature","properties":{"resourceCoords":[1435.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.67060374765119,39.308771578396005]}},{"type":"Feature","properties":{"resourceCoords":[1435.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6754809318126,39.30859636455225]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.67563704536117,39.3112346381119]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0224/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p224","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0224/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0224","type":"ImageService3","width":1429,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"825.1,1882.7 197.7,1883.5 49.5,1799.6 60.5,1799.8 54.0,608.1 136.3,229.3 54.0,108.0 78.7,43.0 1203.4,40.5 1349.7,201.3 1401.5,689.0 1380.7,1835.3 1314.4,2016.3 824.9,1958.5 825.1,1882.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0224/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.66654709558537,39.31061908065257]}},{"type":"Feature","properties":{"resourceCoords":[1429.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.66639928659026,39.30797934572646]}},{"type":"Feature","properties":{"resourceCoords":[1429.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.67129960048592,39.30781275386594]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.67144740948103,39.31045248879205]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0225__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p225 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.83"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3315.2"},{"label":"split_canvas_w","value":"1204.0"},{"label":"split_canvas_h","value":"1708.8"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0225__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0225","type":"ImageService3","width":1406,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"290.1,1111.0 290.8,873.1 287.0,871.6 23.7,897.1 18.1,1193.8 270.6,1242.0 289.1,1209.0 290.1,1111.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0225__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,828.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.66579600838628,39.29809551684514]}},{"type":"Feature","properties":{"resourceCoords":[301.0,828.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.66509548263178,39.29811962088262]}},{"type":"Feature","properties":{"resourceCoords":[301.0,1256.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.66505150420657,39.297343322335436]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1256.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.66575202996107,39.29731921829795]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0225__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p225 [5]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.28"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5015.2"},{"label":"split_canvas_w","value":"2943.2"},{"label":"split_canvas_h","value":"3252.8"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0225__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0225","type":"ImageService3","width":1406,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"224.6,1890.2 614.6,2021.0 696.9,1331.1 40.2,1273.2 46.5,1963.5 224.6,1890.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0225__5/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1253.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.66773845224402,39.297062589590574]}},{"type":"Feature","properties":{"resourceCoords":[735.8,1253.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.66690108880435,39.29725622680112]}},{"type":"Feature","properties":{"resourceCoords":[735.8,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.66662629431778,39.29653447482918]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.66746365775745,39.29634083761864]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0226/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p226","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0226/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0226","type":"ImageService3","width":1412,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"72.6,468.5 71.7,387.9 82.3,100.5 1355.3,140.2 1338.7,1607.4 1244.8,1903.5 958.9,1885.4 586.5,1961.5 232.5,1948.3 129.0,1892.1 81.1,1807.9 73.0,1752.3 86.0,865.5 54.9,840.9 73.3,807.5 73.7,708.5 72.6,468.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0226/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.66532261446616,39.29887734552194]}},{"type":"Feature","properties":{"resourceCoords":[1412.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6620589108077,39.29897162485015]}},{"type":"Feature","properties":{"resourceCoords":[1412.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.66188181848695,39.295248230562905]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.66514552214541,39.295153951234695]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0227__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1901 | sanborn03573_005 p227 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5668.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:39:44Z","modified":"2026-10-24T15:39:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0227__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0227","type":"ImageService3","width":1417,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1383.8,224.7 1291.5,167.1 1181.2,204.9 1013.8,322.3 951.1,970.5 772.8,1045.9 789.5,1145.8 669.5,1268.0 475.3,1338.2 206.5,1314.3 154.4,1378.0 10.6,1361.3 10.7,1377.9 210.1,1556.3 496.0,1811.2 773.3,2054.5 786.2,2066.0 838.5,2066.0 923.0,1965.0 1141.0,1720.0 1302.0,1697.2 1354.9,1675.3 1347.7,1408.6 1365.9,1376.7 1382.2,891.7 1358.2,855.0 1367.2,527.9 1383.8,224.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573190102:03573_02_1901-0227__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[797.0,2039.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64660754085759,39.31205034966266]}},{"type":"Feature","properties":{"resourceCoords":[1343.0,1389.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6467618037118,39.31358347714571]}}]}}]}