{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03573_009.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Baltimore, Maryland | 1914 | 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":"124"},{"label":"placed","value":"109"},{"label":"unplaced","value":"15"},{"label":"fit sources","value":"georef 92, georef-snap 29"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p0__1 (tier 1, 39.30296,-76.64269 +/-100m); p0__2 (tier 1, 39.30696,-76.64366 +/-104m); p178 (tier 2, 39.30493,-76.61984 +/-213m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0113/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p113","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0113/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0113","type":"ImageService3","width":1451,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"63.5,1338.7 58.8,574.1 61.9,415.9 71.1,415.8 1003.0,408.0 1339.8,1314.8 1429.5,1551.8 1429.2,1611.0 1381.2,1574.3 1092.0,1696.5 689.5,1672.0 597.1,1735.4 85.8,1631.5 64.0,1640.1 63.5,1338.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0113/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1225.0,1006.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6295028,39.2900601]}},{"type":"Feature","properties":{"resourceCoords":[1003.0,408.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6300796,39.2911226]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0114/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p114","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0114/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0114","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"605.1,418.6 1041.8,401.6 1145.7,404.0 1357.3,411.9 1360.9,619.1 1367.5,1007.1 1360.3,1007.1 1367.6,1605.9 1377.3,1605.8 1377.1,1643.5 1358.5,1643.5 1185.2,1723.6 830.0,1758.0 546.5,1678.0 462.7,1613.1 452.2,1546.2 365.1,1312.2 38.5,416.6 605.1,418.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0114/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[477.0,1613.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6289055,39.2889703]}},{"type":"Feature","properties":{"resourceCoords":[145.0,708.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6297944,39.2905983]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0115/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p115","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"25"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0115/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0115","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"84.5,1759.8 74.8,1759.8 68.3,1159.8 75.5,1159.8 69.4,771.0 66.2,563.0 59.2,119.2 146.6,118.8 793.0,255.8 791.9,350.5 1061.0,456.2 1061.3,407.7 1409.1,407.8 1409.3,450.2 1409.8,560.6 1405.2,1157.9 1396.5,1778.4 1226.3,1766.5 779.3,1847.7 619.5,1795.5 84.3,1797.5 84.5,1759.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0115/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[776.0,1756.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6251438,39.2891326]}},{"type":"Feature","properties":{"resourceCoords":[1203.0,561.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6242756,39.2913551]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0116/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p116","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0116/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0116","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1267.6,1763.9 1106.8,1859.2 658.8,1776.3 431.4,1868.2 372.3,1865.0 333.4,1759.2 134.8,1744.7 145.4,1121.5 151.9,521.6 151.7,410.8 151.7,377.0 730.7,361.2 730.8,358.7 1307.2,361.9 1308.0,477.9 1307.3,856.6 1312.0,1122.0 1309.1,1767.0 1267.6,1763.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0116/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[432.0,1122.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6230547,39.2903092]}},{"type":"Feature","properties":{"resourceCoords":[1312.0,1122.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6209863,39.2903935]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0117/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p117","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0117/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0117","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"68.0,280.1 68.0,277.1 717.4,231.7 717.3,180.2 774.2,212.7 1378.6,212.9 1374.7,567.7 1373.2,987.9 1368.9,1219.0 1373.1,1529.5 1331.2,1706.9 1314.4,1833.5 1413.8,1841.5 1408.4,1890.8 1314.9,1870.3 966.4,1935.1 73.9,1868.2 75.7,1215.4 70.5,946.8 70.5,563.6 68.0,280.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0117/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[713.0,608.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61957767072282,39.29154379234906]}},{"type":"Feature","properties":{"resourceCoords":[83.0,911.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62100527349978,39.290941423596095]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0118/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p118","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0118/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0118","type":"ImageService3","width":1450,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"635.4,218.9 860.5,312.8 896.1,226.8 1313.3,424.1 1308.8,286.0 1325.5,286.1 1374.7,1823.2 495.2,1941.5 191.2,1877.4 196.2,1828.7 97.9,1821.6 113.4,1696.4 153.3,1520.8 146.6,1214.1 149.0,985.9 146.9,570.8 147.8,220.3 635.4,218.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0118/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1322.0,1516.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61518658993396,39.29004671659836]}},{"type":"Feature","properties":{"resourceCoords":[147.0,593.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61804305266045,39.29163636414776]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0119/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p119","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0119/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0119","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"757.6,1756.4 190.2,1708.6 187.3,1511.3 191.0,762.6 192.2,314.6 192.2,187.5 764.8,189.5 1246.0,183.4 1246.0,186.0 1246.8,419.8 1246.0,1806.0 756.5,1983.7 756.6,1952.7 757.6,1756.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0119/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1246.0,1806.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6308748,39.292583]}},{"type":"Feature","properties":{"resourceCoords":[1246.0,186.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6270857,39.292741]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0120/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p120","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0120/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0120","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"293.5,1793.6 310.1,404.3 312.0,170.0 690.0,170.0 1139.0,170.0 1139.5,170.0 1127.8,384.3 1129.6,489.6 1123.5,489.6 1133.2,932.5 1121.4,1506.7 293.5,1793.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0120/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1139.0,170.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6269597,39.2912484]}},{"type":"Feature","properties":{"resourceCoords":[312.0,170.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6270857,39.292741]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0121/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p121","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0121/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0121","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1067.7,1843.9 1067.3,1892.8 795.8,1785.7 797.0,1690.1 144.7,1551.0 56.4,1551.3 51.0,1174.0 53.5,1174.0 46.1,692.7 46.5,119.9 265.4,119.3 981.1,117.5 1087.0,118.5 1373.1,121.5 1422.9,121.1 1422.4,657.0 1422.0,992.8 1418.0,1222.8 1418.8,1844.5 1067.7,1843.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0121/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[793.0,1999.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6252521,39.2913163]}},{"type":"Feature","properties":{"resourceCoords":[51.0,1174.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6270857,39.292741]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0122/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p122","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"25"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0122/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0122","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"720.6,127.7 1297.9,125.9 1298.4,460.7 1296.0,684.0 1295.0,1258.2 1296.5,1631.7 1296.7,1676.3 1298.9,1841.5 719.1,1842.3 719.1,1844.8 136.8,1864.7 136.7,1855.8 132.5,1233.7 135.4,1003.5 131.6,131.2 142.2,131.1 720.6,127.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0122/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[718.0,1263.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6225114,39.2927742]}},{"type":"Feature","properties":{"resourceCoords":[1296.0,684.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6212221,39.2938694]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0123/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p123","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0123/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0123","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"62.5,1683.7 61.9,1307.6 64.5,729.6 67.5,504.8 67.8,167.8 682.1,162.7 1047.8,161.7 1369.8,166.4 1368.8,676.0 1370.4,1264.4 1373.8,1657.9 769.0,1659.2 712.0,1626.8 712.2,1678.5 62.5,1725.6 62.5,1683.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0123/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[460.0,724.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62030441523741,39.29391368016999]}},{"type":"Feature","properties":{"resourceCoords":[1364.0,1308.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61814029382856,39.29294270249074]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0124/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p124","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0124/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0124","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"124.5,1279.2 128.8,693.4 135.0,185.9 761.8,188.0 1310.1,194.3 1310.0,214.2 1306.7,216.3 1355.6,660.5 1308.2,1600.3 1310.8,1756.1 1294.0,1755.8 1296.3,1895.2 878.6,1689.5 841.3,1775.6 615.8,1677.4 124.0,1671.1 124.5,1279.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0124/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[120.0,733.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61821508342622,39.294006176092616]}},{"type":"Feature","properties":{"resourceCoords":[1062.0,1540.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6159103684762,39.29264990969494]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0125/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p125","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0125/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0125","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"100.2,558.4 217.0,733.8 128.0,812.0 127.6,873.2 293.2,1052.5 124.3,1211.3 282.4,1400.6 389.1,1958.4 390.3,1984.5 394.1,1984.6 677.8,1989.0 738.5,1988.9 1319.4,1991.6 1359.7,993.5 1368.4,707.2 1383.0,589.3 1282.7,507.3 1148.0,382.5 821.9,4.5 818.8,1.0 736.5,1.0 100.2,558.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0125/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[753.0,1976.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62394614396875,39.294798965997444]}},{"type":"Feature","properties":{"resourceCoords":[1348.0,1976.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6225620853637,39.29485914679219]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0126/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p126","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0126/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0126","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"457.8,1006.9 466.9,726.5 481.5,611.2 383.5,530.7 631.4,293.6 625.0,381.9 661.6,355.8 812.5,137.8 853.9,83.5 1011.0,92.0 1000.0,667.0 997.9,1012.3 966.4,1011.7 997.0,1037.4 989.7,1505.2 990.7,1956.6 983.7,1989.4 416.1,1983.8 457.8,1006.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0126/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1000.0,667.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6214224,39.2973122]}},{"type":"Feature","properties":{"resourceCoords":[701.0,1987.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6219492,39.2948531]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0127/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p127","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0127/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0127","type":"ImageService3","width":1453,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"70.8,1988.6 61.9,1523.1 61.3,1040.6 61.9,1014.7 58.0,658.6 59.4,65.5 376.1,65.7 636.4,60.6 1032.0,57.7 1364.0,57.4 1368.5,1359.2 1375.6,2012.6 1051.2,2010.0 682.8,2013.4 64.1,2022.5 70.8,1988.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0127/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1035.0,659.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61916980791213,39.29738412591555]}},{"type":"Feature","properties":{"resourceCoords":[72.0,659.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62139004857602,39.29731251417926]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0128/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p128","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"26"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0128/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0128","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"115.4,1357.7 110.7,80.3 398.8,70.4 744.0,65.8 1314.8,63.5 1343.8,109.5 1348.4,249.6 1349.4,305.9 1322.5,408.6 1404.4,938.7 1389.6,1294.2 1319.6,1372.9 1346.8,1967.5 1289.0,2007.3 1288.8,1987.6 744.5,1990.5 122.4,1998.8 115.4,1357.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0128/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[696.0,1316.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6169734,39.2962792]}},{"type":"Feature","properties":{"resourceCoords":[696.0,656.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6170378,39.2974793]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0129/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p129","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0129/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0129","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1286.3,1757.5 1228.1,1874.9 1198.2,1874.8 1098.2,1816.4 480.7,1849.8 141.4,1798.3 79.3,1157.4 87.1,445.2 113.1,344.0 266.7,345.0 1388.1,340.7 1424.2,340.6 1426.0,782.0 1423.1,1695.5 1338.2,1696.7 1338.7,1749.7 1286.3,1757.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0129/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[800.0,944.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6544135,39.2892195]}},{"type":"Feature","properties":{"resourceCoords":[800.0,343.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.654473,39.2903118]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0130/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p130","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0130/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0130","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"23.6,1747.0 24.0,1694.0 108.9,1693.9 124.9,779.6 129.5,337.8 138.4,337.9 1328.5,349.2 1318.4,993.6 1309.5,1395.7 1307.0,1788.9 1251.9,1856.2 1070.6,1905.5 441.4,1855.0 203.4,1722.6 23.6,1747.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0130/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[708.0,1694.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6514716,39.2879628]}},{"type":"Feature","properties":{"resourceCoords":[720.0,943.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.651543,39.2893265]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0131/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p131","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0131/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0131","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1377.2,1683.7 1256.8,1752.2 595.9,1740.0 409.5,1805.9 80.5,1763.2 72.0,1774.0 68.3,1385.1 70.9,987.5 70.8,350.1 484.9,353.4 1387.4,350.8 1383.6,768.0 1390.2,942.7 1390.9,1265.0 1388.3,1441.7 1391.7,1683.5 1377.2,1683.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0131/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[657.0,1280.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.648715,39.2888027]}},{"type":"Feature","properties":{"resourceCoords":[1384.0,623.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6470539,39.2900632]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0132/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p132","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0132/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0132","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"246.7,346.6 604.3,350.5 1396.8,354.7 1396.1,391.6 1390.0,1691.0 1361.9,1686.0 51.4,1689.2 49.8,1445.7 53.6,1267.8 55.2,943.3 49.8,767.3 56.6,347.4 246.7,346.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0132/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[792.0,946.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64527275366537,39.289536012092896]}},{"type":"Feature","properties":{"resourceCoords":[72.0,625.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64700459657425,39.290058424766464]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0133/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p133","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"25"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0133/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0133","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"129.8,424.0 130.2,386.9 432.2,381.3 1340.4,379.4 1335.7,1670.5 1336.6,1773.5 1268.2,1766.1 1218.8,1883.4 1054.5,1891.9 135.2,1733.2 129.8,424.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0133/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[735.0,986.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6424458,39.2896247]}},{"type":"Feature","properties":{"resourceCoords":[132.0,986.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.643856,39.2895822]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0134/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p134","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0134/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0134","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1293.4,1781.0 1274.9,1861.2 1111.7,1882.9 116.3,1766.7 116.3,1664.8 131.7,388.6 1323.7,394.7 1315.9,1653.8 1316.6,1782.1 1293.4,1781.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0134/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[717.0,1662.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6395584,39.2884855]}},{"type":"Feature","properties":{"resourceCoords":[721.0,990.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6396243,39.2897158]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0135/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p135","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0135/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0135","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1215.2,1767.0 989.2,1855.0 403.0,1848.1 294.0,1784.7 80.1,1776.7 78.1,1647.4 73.1,378.9 672.6,375.9 1089.0,379.0 1327.7,377.8 1367.0,680.7 1354.5,680.8 1357.4,973.0 1354.2,973.1 1347.1,1312.7 1340.8,1312.9 1338.8,1617.1 1309.6,1617.8 1315.2,1772.1 1215.2,1767.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0135/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[677.0,1633.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.636738,39.2886193]}},{"type":"Feature","properties":{"resourceCoords":[377.0,980.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6374995,39.2897858]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0136/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p136","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0136/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0136","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"100.2,674.4 68.1,370.0 228.1,373.0 980.8,386.8 1367.8,399.1 1361.7,556.5 1351.9,1317.7 1346.6,1617.8 1346.1,1651.5 1275.9,1782.7 1004.2,1840.5 21.8,1766.6 19.9,1611.9 49.2,1611.9 58.5,1307.2 64.9,1307.2 80.3,967.1 83.5,967.1 87.7,674.2 100.2,674.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0136/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[652.0,1612.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6337746,39.2887599]}},{"type":"Feature","properties":{"resourceCoords":[662.0,977.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6338425,39.2899112]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0137/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p137","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0137/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0137","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"117.5,1641.3 54.1,1151.8 94.1,252.7 93.0,247.7 1370.3,235.3 1371.9,430.3 1377.0,1051.7 1375.1,1428.5 1369.7,1428.5 1364.5,1732.7 1284.4,1734.4 721.0,1746.0 95.7,1756.7 117.5,1641.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0137/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[721.0,1746.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6547206,39.293522]}},{"type":"Feature","properties":{"resourceCoords":[64.0,248.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6564003,39.2962158]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0138/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p138","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.82"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0138/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0138","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"78.3,1758.2 50.3,356.6 97.9,134.0 728.0,138.0 1295.8,139.6 1354.8,139.7 1349.2,1918.5 1317.4,1918.0 193.5,1902.7 39.6,1899.0 78.3,1758.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0138/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[728.0,138.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6547206,39.293522]}},{"type":"Feature","properties":{"resourceCoords":[728.0,1910.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.654473,39.2903118]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0139/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p139","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0139/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0139","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"142.2,1921.2 128.9,1921.2 108.0,145.4 141.5,145.0 332.1,137.2 740.3,134.0 1156.6,134.1 1335.0,138.0 1337.0,638.2 1331.8,1918.5 142.2,1921.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0139/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1335.0,1134.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6502701,39.2918911]}},{"type":"Feature","properties":{"resourceCoords":[1335.0,138.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6503746,39.2936999]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0140/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p140","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0140/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0140","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"402.9,144.3 480.6,119.9 855.0,117.5 1400.0,122.1 1387.2,1677.7 1387.9,1931.0 471.5,1929.2 51.1,1923.7 57.6,637.5 56.0,135.0 402.9,144.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0140/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[651.0,1136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6488780730885,39.291939562772086]}},{"type":"Feature","properties":{"resourceCoords":[1384.0,1136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64716598407766,39.29200009582998]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0141/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p141","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0141/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0141","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"60.8,1686.5 74.4,140.2 1413.2,136.6 1408.7,574.3 1404.8,1943.8 610.3,1940.8 251.8,1937.5 61.3,1938.4 60.8,1686.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0141/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[800.0,648.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6454766,39.292972]}},{"type":"Feature","properties":{"resourceCoords":[800.0,1941.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.645336,39.2906207]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0142/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p142","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0142/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0142","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"119.8,567.5 123.9,128.0 724.2,130.9 1137.7,124.5 1323.6,122.0 1331.6,646.9 1330.1,646.9 1330.5,909.5 1325.7,1746.5 1326.3,1942.9 419.0,1939.0 117.2,1942.7 119.8,567.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0142/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[419.0,1939.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.643209,39.2906979]}},{"type":"Feature","properties":{"resourceCoords":[1328.0,122.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6412743,39.2940632]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0143/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p143","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0143/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0143","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"121.5,1941.8 120.1,1745.9 121.8,911.3 120.3,649.4 121.8,649.4 111.8,126.1 116.3,126.0 417.5,124.3 759.7,114.3 1019.9,114.5 1324.5,109.9 1325.4,577.6 1322.8,1940.7 121.5,1941.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0143/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[719.0,1170.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.639758,39.2922122]}},{"type":"Feature","properties":{"resourceCoords":[719.0,1648.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6397115,39.2913439]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0144/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p144","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0144/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0144","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"114.4,582.1 114.7,113.7 417.0,109.9 754.1,108.4 1013.1,112.1 1328.0,110.0 1327.0,315.4 1327.3,1154.8 1319.5,1155.0 1323.4,1954.9 1125.8,1954.5 708.7,1948.6 108.0,1947.3 114.4,582.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0144/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[410.0,1948.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6375579,39.2908807]}},{"type":"Feature","properties":{"resourceCoords":[1328.0,110.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6355975,39.2942874]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0145/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p145","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0145/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0145","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"62.1,1171.2 69.8,1171.0 60.3,340.9 59.0,137.8 1197.8,112.9 1380.6,109.0 1390.3,659.0 1410.0,658.7 1416.1,1143.8 1401.6,1144.0 1407.0,1954.0 1401.0,1954.2 1018.3,1952.8 274.1,1960.3 74.9,1962.1 62.1,1171.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0145/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[67.0,922.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6355171,39.2928492]}},{"type":"Feature","properties":{"resourceCoords":[700.0,670.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6340363,39.2933499]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0146/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p146","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0146/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0146","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"294.8,1961.9 314.3,1141.8 329.0,1142.0 337.7,650.9 317.8,650.6 324.9,93.6 561.7,95.7 1046.5,93.4 993.2,660.3 797.0,657.5 766.0,657.0 939.0,1148.2 1226.8,1973.8 298.0,1962.0 294.8,1961.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0146/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[766.0,657.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6313521,39.2934518]}},{"type":"Feature","properties":{"resourceCoords":[329.0,1142.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6323016,39.2925242]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0147/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p147","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0147/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0147","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"125.4,273.5 1322.5,271.8 1322.5,273.8 1324.0,963.9 1321.8,1702.6 1142.5,1699.1 724.0,1700.0 313.7,1704.1 122.0,1712.4 110.1,1712.6 117.2,1405.1 122.8,1405.0 127.0,1024.0 125.7,395.6 125.4,273.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0147/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[127.0,1024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6532311,39.2948343]}},{"type":"Feature","properties":{"resourceCoords":[724.0,1700.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6517705,39.2936588]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0148/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p148","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0148/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0148","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"856.0,1680.2 483.1,1684.0 405.7,1708.5 60.1,1700.5 61.9,965.2 60.2,278.1 1401.2,273.8 1403.1,956.2 1399.0,1682.7 856.0,1680.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0148/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1026.0,278.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64824971414522,39.29635516172292]}},{"type":"Feature","properties":{"resourceCoords":[345.0,1692.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64970741389041,39.29373714053413]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0149/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p149","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0149/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0149","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"62.9,1669.5 69.0,951.0 69.0,276.2 1392.3,276.5 1389.7,1663.9 62.9,1669.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0149/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[69.0,951.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6472986,39.2951532]}},{"type":"Feature","properties":{"resourceCoords":[1391.0,951.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6441641,39.2952619]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0150/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p150","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0150/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0150","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"106.0,280.0 713.9,278.6 714.1,235.4 1325.3,195.7 1334.2,964.2 1319.2,964.2 1314.8,1679.5 1124.0,1682.7 709.4,1690.5 107.4,1689.6 106.0,280.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0150/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[413.0,965.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6434491,39.2952856]}},{"type":"Feature","properties":{"resourceCoords":[106.0,280.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6442327,39.2964997]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0151/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p151","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0151/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0151","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"149.8,214.9 741.6,232.3 741.8,202.1 1349.1,209.4 1348.3,309.9 1336.0,1688.0 1030.4,1689.2 769.4,1686.2 426.0,1692.5 123.8,1690.9 135.6,977.3 150.6,977.5 149.8,214.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0151/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1038.0,986.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6392229,39.2954255]}},{"type":"Feature","properties":{"resourceCoords":[1336.0,1688.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63844,39.2941834]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0152/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p152","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0152/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0152","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"107.8,319.5 704.9,315.7 1006.6,315.4 1321.8,311.9 1323.6,992.1 1323.0,1684.0 1008.8,1687.3 750.3,1684.7 413.9,1687.5 112.3,1692.5 107.8,319.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0152/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[110.0,996.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6385112,39.2954491]}},{"type":"Feature","properties":{"resourceCoords":[1323.0,1684.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6355975,39.2942874]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0153/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p153","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"22"},{"label":"confidence","value":"1.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0153/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0153","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1114.5,337.0 1137.1,336.9 1148.6,317.7 1151.0,433.6 1290.3,801.0 1422.3,1158.9 1422.0,1352.7 1238.3,1355.9 1295.2,1681.8 1203.7,1683.1 67.6,1699.4 68.5,1015.5 66.9,343.1 1114.5,337.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0153/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1279.0,772.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6328088,39.296083]}},{"type":"Feature","properties":{"resourceCoords":[690.0,1013.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.634185,39.2955959]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0154/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p154","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0154/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0154","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"13.7,626.7 14.3,746.5 156.7,1120.8 291.7,1485.6 291.6,1683.1 104.4,1686.7 162.7,2018.9 493.1,2013.9 1177.9,1994.2 1301.0,1993.0 1283.2,1874.6 1265.5,1874.6 1315.8,1481.7 1375.4,1468.2 1411.7,1022.2 1420.0,1012.2 1419.2,749.2 1205.1,508.2 861.0,119.7 772.8,17.5 758.5,1.0 753.5,1.0 714.1,10.6 162.4,504.4 13.7,626.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0154/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[990.0,1487.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6308034,39.2954295]}},{"type":"Feature","properties":{"resourceCoords":[-23.0,648.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6332415,39.2968706]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0155/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p155","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.75"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0155/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0155","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"436.6,128.6 553.4,265.8 1119.3,72.5 1190.9,156.7 1216.8,187.2 1225.2,196.9 1209.2,1035.8 1264.3,1100.5 1287.4,1127.6 1265.8,1146.3 1252.8,1376.1 1227.7,1409.0 1283.7,1527.5 1282.0,1530.2 1337.0,2005.8 1192.2,2005.5 740.0,2003.6 107.8,1999.5 91.8,1880.2 74.0,1879.8 130.8,1485.7 191.0,1473.1 234.7,1025.2 243.2,1015.3 246.6,750.9 35.2,505.2 436.6,128.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0155/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[246.0,316.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62992833958751,39.29757020827105]}},{"type":"Feature","properties":{"resourceCoords":[874.0,-252.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62854679030798,39.298650800286744]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0156/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p156","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.55"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0156/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0156","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"297.2,1386.3 301.1,1159.2 321.7,1139.8 301.8,1118.2 297.9,1113.9 241.0,1052.2 224.3,223.9 244.7,245.9 315.4,321.9 709.5,746.4 799.8,847.5 991.2,651.2 1081.1,565.8 1203.8,735.0 1118.7,816.0 1120.8,876.6 1292.0,1047.8 1130.8,1211.8 1295.0,1393.2 1422.7,1941.7 1422.8,1967.6 1319.5,1970.2 606.5,1996.8 404.7,2004.3 332.1,1537.2 333.5,1534.5 273.8,1419.8 297.2,1386.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0156/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1596.0,1194.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62441651110757,39.296158157797414]}},{"type":"Feature","properties":{"resourceCoords":[1773.0,1994.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6239702445739,39.29470907807991]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0157/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p157","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0157/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0157","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"53.2,1623.6 37.5,303.6 104.5,66.6 1199.1,66.3 1389.0,67.0 1389.6,1870.8 107.6,1873.2 53.2,1623.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0157/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[730.0,1872.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6548681,39.2962704]}},{"type":"Feature","properties":{"resourceCoords":[1389.0,67.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.653506,39.2996086]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0158/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p158","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0158/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0158","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"108.0,52.8 1340.4,107.8 1347.5,643.5 1299.7,643.7 1297.5,1296.2 1298.3,1771.9 1298.0,1934.0 109.8,1934.3 109.8,1859.8 108.0,56.0 108.0,52.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0158/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[108.0,56.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.653506,39.2996086]}},{"type":"Feature","properties":{"resourceCoords":[1298.0,1936.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6505146,39.2962813]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0159/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p159","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0159/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0159","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"68.7,1806.5 65.5,1332.2 64.2,681.8 112.0,681.4 101.1,92.6 655.5,96.9 655.5,88.2 1389.9,82.7 1397.8,1319.7 1402.0,1639.5 1402.0,1961.0 69.2,1970.1 68.7,1806.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0159/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[346.0,680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6499784,39.2986566]}},{"type":"Feature","properties":{"resourceCoords":[662.0,1966.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6491161,39.2963303]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0160/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p160","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0160/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0160","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1385.4,71.8 1406.9,1962.1 69.9,1979.5 67.6,1656.4 61.3,1334.9 44.7,91.2 1385.4,71.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0160/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[514.0,1331.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64637571011384,39.29759514036677]}},{"type":"Feature","properties":{"resourceCoords":[60.0,1988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64739293286455,39.29637548994067]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0161/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p161","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0161/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0161","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"126.7,79.2 1337.0,87.3 1335.0,686.0 1330.5,1234.2 1332.5,1905.8 721.0,1940.4 720.4,1983.5 112.5,1979.8 126.7,79.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0161/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[728.0,1336.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6428723,39.2977182]}},{"type":"Feature","properties":{"resourceCoords":[1335.0,686.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6415325,39.298947]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0162/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p162","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0162/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0162","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"107.9,1230.8 109.0,681.9 107.0,82.5 1318.6,82.8 1317.9,1891.7 708.4,1889.5 708.4,1919.8 114.4,1907.5 107.9,1230.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0162/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1015.0,1598.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6393267,39.2973662]}},{"type":"Feature","properties":{"resourceCoords":[1318.0,1598.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6386204,39.2973902]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0163/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p163","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"21"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0163/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0163","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1032.0,1965.2 729.0,1965.1 129.3,1968.2 129.1,1867.6 125.5,64.0 1346.0,62.0 1348.6,1962.1 1032.0,1965.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0163/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[128.0,1318.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6386465,39.2978548]}},{"type":"Feature","properties":{"resourceCoords":[1346.0,62.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6359205,39.3002189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0164/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p164","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0164/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0164","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"213.0,1980.0 213.0,91.3 406.7,91.1 521.3,91.0 566.1,90.9 789.4,680.9 1032.8,1341.7 1271.2,1976.2 213.0,1980.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0164/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[213.0,682.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6358609,39.2991437]}},{"type":"Feature","properties":{"resourceCoords":[213.0,1980.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63573,39.2967811]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0165/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p165","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0165/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0165","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1137.6,1952.2 402.1,1950.8 208.4,1942.3 169.8,1933.8 415.0,1300.0 674.2,643.2 901.0,52.8 877.7,32.0 953.9,73.2 957.9,88.8 1151.3,89.8 1192.0,90.0 1181.4,1367.5 1177.2,1952.4 1137.6,1952.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0165/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[415.0,1300.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6338663,39.2980069]}},{"type":"Feature","properties":{"resourceCoords":[1192.0,90.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6345392,39.3005673]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0166/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p166","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0166/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0166","type":"ImageService3","width":1455,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"169.6,847.0 166.5,260.9 221.4,250.6 936.4,247.9 1003.9,215.0 994.8,262.5 1266.2,241.9 1266.2,250.4 1268.5,1481.3 1268.3,1510.3 1266.5,1812.2 1266.7,1909.8 715.6,1693.2 715.2,1514.8 171.0,1542.1 168.4,1025.4 169.3,891.0 169.6,847.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0166/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[714.0,846.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6305915,39.2988033]}},{"type":"Feature","properties":{"resourceCoords":[444.0,250.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6320115,39.2992504]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0167/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p167","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0167/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0167","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"82.7,409.9 734.0,400.4 734.0,386.0 1051.2,374.7 1315.0,358.8 1369.8,350.9 1369.5,953.3 1366.3,1569.2 1366.3,1579.6 76.1,1645.9 76.2,1641.9 82.7,416.8 82.7,409.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0167/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[734.0,980.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6285889,39.3003592]}},{"type":"Feature","properties":{"resourceCoords":[734.0,386.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6295584,39.301139]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0168/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p168","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0168/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0168","type":"ImageService3","width":1453,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1305.7,1739.8 336.5,1744.3 61.2,1756.2 64.8,1620.0 69.1,933.7 69.3,890.8 69.8,851.1 72.0,643.7 77.4,341.2 77.8,316.2 1377.3,255.8 1377.2,268.5 1374.6,837.7 1365.7,1593.0 1365.8,1698.0 1366.0,1792.2 1305.7,1739.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0168/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1372.0,851.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6255767983763,39.29959163209813]}},{"type":"Feature","properties":{"resourceCoords":[77.0,300.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6286459073968,39.298674033476274]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0169/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p169","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0169/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0169","type":"ImageService3","width":1451,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"283.6,1571.3 281.4,1076.5 280.6,976.8 279.7,872.3 283.0,121.0 338.6,125.0 1181.9,120.7 1179.2,1529.2 1198.6,1581.3 1242.8,1635.8 1076.4,1825.7 960.9,1716.0 893.4,1730.8 633.9,1799.8 588.5,1795.8 651.4,1732.0 304.7,1752.1 283.6,1571.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0169/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[283.0,1472.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6233981,39.2978372]}},{"type":"Feature","properties":{"resourceCoords":[283.0,121.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6255941,39.2996122]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0170/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p170","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0170/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0170","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"396.1,96.5 607.9,104.0 724.3,120.9 766.0,85.2 1030.0,66.9 1150.8,68.8 1156.3,149.0 1285.7,137.5 1319.9,816.8 1446.0,817.0 1446.0,865.2 1295.0,866.4 1147.1,865.0 1261.9,902.9 977.2,1223.7 282.0,2013.2 46.0,1809.2 211.1,1617.0 166.1,1562.7 146.1,1510.7 134.8,97.2 396.1,96.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0170/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[141.0,1184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62231592969847,39.29931472031239]}},{"type":"Feature","properties":{"resourceCoords":[141.0,96.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62405986043447,39.30075266403732]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0171/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p171","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0171/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0171","type":"ImageService3","width":1451,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"247.1,1749.4 506.6,1744.5 901.0,1742.0 1232.0,1742.0 1224.5,748.0 881.8,460.7 701.0,324.2 596.7,240.3 537.9,234.1 529.2,67.8 524.8,1.0 475.6,1.0 434.9,53.4 266.2,201.1 151.9,297.7 264.9,250.9 258.6,684.9 247.1,1749.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0171/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[901.0,1742.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6192346,39.2984567]}},{"type":"Feature","properties":{"resourceCoords":[1232.0,1742.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6184692,39.2984819]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0172/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p172","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0172/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0172","type":"ImageService3","width":1451,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"124.0,739.5 128.6,518.9 302.4,494.3 507.9,455.6 562.2,425.8 604.4,397.5 649.1,387.8 1292.0,386.0 1336.7,435.7 1379.8,1882.1 1361.5,1891.8 1357.8,1751.9 1329.0,1705.9 759.3,1705.0 414.7,1707.7 127.1,1716.1 124.0,739.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0172/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1292.0,386.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6158748,39.3010039]}},{"type":"Feature","properties":{"resourceCoords":[130.0,368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6186115,39.3009372]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0173/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p173","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0173/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0173","type":"ImageService3","width":1451,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"88.8,1126.3 209.2,1015.6 208.3,996.9 849.8,279.2 823.2,279.2 810.1,266.2 863.5,263.8 983.3,129.8 1048.2,133.0 1076.6,179.7 1070.1,239.3 1168.8,717.8 1195.2,716.6 1351.2,715.2 1296.3,784.2 1268.2,836.9 1237.6,964.9 1284.0,1216.3 1351.5,1527.3 1296.7,1558.3 1088.5,1600.5 912.3,1627.9 910.7,1852.0 566.1,1568.5 384.4,1433.9 279.6,1351.1 220.8,1345.4 210.7,1179.5 205.5,1112.0 157.3,1112.4 116.4,1166.0 64.0,1212.8 31.9,1176.2 88.8,1126.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0173/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[912.0,1475.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61861055754636,39.30093638520628]}},{"type":"Feature","properties":{"resourceCoords":[912.0,133.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61871444816252,39.30334343224602]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0174/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p174","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"24"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0174/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0174","type":"ImageService3","width":1451,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"268.5,908.5 178.1,435.9 185.3,377.3 158.0,330.9 568.0,323.0 1156.7,324.1 1157.8,466.5 1234.7,459.9 1162.6,1656.9 1166.9,1668.8 523.8,1670.0 479.0,1679.8 436.8,1708.1 374.8,1400.9 332.7,1152.7 364.6,1027.1 393.1,975.7 448.1,908.5 294.5,907.7 268.5,908.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0174/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[568.0,323.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6174351,39.3034017]}},{"type":"Feature","properties":{"resourceCoords":[861.0,323.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6167458,39.3034272]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0175/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p175","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0175/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0175","type":"ImageService3","width":1451,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"182.3,117.7 573.6,121.2 1032.2,123.0 1032.3,119.4 1289.5,116.0 1281.5,674.5 1430.2,671.9 1430.4,729.9 1320.3,733.4 1329.2,1958.6 1292.7,1957.0 1029.5,1955.2 177.1,1959.9 120.8,1955.9 119.1,1383.7 119.0,1360.4 120.5,736.8 119.0,127.0 182.3,117.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0175/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[574.0,1358.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6257938,39.3009533]}},{"type":"Feature","properties":{"resourceCoords":[119.0,127.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6285371,39.301988]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0176/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p176","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.76"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0176/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0176","type":"ImageService3","width":1451,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"487.4,108.3 487.3,125.5 641.5,125.5 641.5,131.8 1170.2,132.5 1169.1,707.0 1149.9,698.7 1088.3,680.5 951.6,693.5 926.0,715.8 1034.1,720.8 1107.0,740.0 1125.2,1349.8 1127.8,1349.8 1130.8,1930.6 1067.0,1928.9 869.9,1923.8 604.7,1939.2 562.4,1974.7 445.8,1956.5 269.6,1948.3 262.2,727.1 372.0,723.8 371.8,666.0 223.7,668.3 232.3,111.7 487.4,108.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0176/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[897.0,109.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62547294238296,39.30429230590211]}},{"type":"Feature","properties":{"resourceCoords":[558.0,1942.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62308398005064,39.301480349864015]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0177/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p177","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.36"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0177/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0177","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"289.5,60.5 827.1,77.4 828.8,69.5 1413.2,91.0 1409.3,167.9 1426.2,188.9 1427.0,775.0 1418.5,1975.0 507.7,2024.8 495.1,2038.6 332.2,2031.5 129.3,2017.7 140.6,1333.2 9.8,1336.0 9.7,1259.3 9.7,1255.1 85.4,1261.2 149.2,1266.5 178.7,684.9 176.2,684.8 192.0,73.3 120.0,49.9 12.1,38.9 23.6,30.0 26.0,30.0 27.0,27.3 39.0,18.0 132.0,16.0 132.0,14.4 156.5,13.5 158.0,16.0 174.0,16.0 176.7,12.7 237.2,34.3 289.5,60.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0177/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[445.0,1280.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6216455,39.3025838]}},{"type":"Feature","properties":{"resourceCoords":[1031.0,77.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6227626,39.3048327]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0179/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p179","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0179/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0179","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"94.4,1917.2 85.2,277.8 138.8,250.3 146.5,77.4 1364.0,140.0 1366.8,741.2 1388.0,741.0 1388.0,1327.0 1388.0,1930.0 1196.2,1929.2 91.0,1929.2 94.4,1917.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0179/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1388.0,741.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6536294,39.3017518]}},{"type":"Feature","properties":{"resourceCoords":[1388.0,1930.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.653506,39.2996086]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0180/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p180","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0180/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0180","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"123.0,731.0 101.8,731.2 99.3,194.4 123.0,193.7 123.0,100.8 1341.5,137.0 1364.0,1970.4 123.0,1913.7 123.0,1315.5 123.0,731.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0180/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[123.0,731.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6536294,39.3017518]}},{"type":"Feature","properties":{"resourceCoords":[123.0,1917.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.653506,39.2996086]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0181/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p181","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0181/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0181","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"662.0,1936.8 103.1,1928.5 82.2,117.5 1399.0,181.1 1398.7,332.2 1398.3,733.1 1406.6,1330.7 1402.2,1927.5 662.0,1928.0 662.0,1936.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0181/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[662.0,1928.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6493016,39.299759]}},{"type":"Feature","properties":{"resourceCoords":[1399.0,140.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6477666,39.3030576]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0182/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p182","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0182/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0182","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"55.9,168.9 56.0,140.5 1296.1,140.1 1403.2,138.8 1402.6,751.0 1404.3,1371.9 1403.2,1925.6 59.7,1926.8 63.9,1330.5 55.4,733.2 55.6,332.6 55.9,168.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0182/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1378.0,1332.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6445447069712,39.30100636864059]}},{"type":"Feature","properties":{"resourceCoords":[1378.0,137.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64467081821591,39.30317197802888]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0183/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p183","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"18"},{"label":"confidence","value":"1.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0183/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0183","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"118.2,1377.7 115.9,754.2 116.0,139.3 418.9,138.1 725.0,140.0 1328.2,139.3 1328.7,1934.4 117.5,1933.8 118.2,1377.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0183/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[725.0,1336.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6430679,39.3010599]}},{"type":"Feature","properties":{"resourceCoords":[725.0,140.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6431912,39.3032183]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0184/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p184","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"19"},{"label":"confidence","value":"1.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0184/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0184","type":"ImageService3","width":1447,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"131.6,137.9 738.0,137.0 1039.6,135.1 1344.1,136.2 1344.3,176.4 1346.5,622.5 1343.5,1367.6 1343.0,1932.6 132.6,1932.2 131.6,137.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0184/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[738.0,608.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6403215,39.3024671]}},{"type":"Feature","properties":{"resourceCoords":[738.0,137.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6403698,39.3033175]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0185/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p185","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"20"},{"label":"confidence","value":"1.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0185/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0185","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1202.1,2021.2 1205.8,2022.1 1206.0,2004.8 1356.5,1357.8 1387.2,1295.0 1420.3,1257.0 1414.2,1171.5 1371.0,750.0 1327.4,413.9 1299.2,202.8 457.8,8.8 423.5,1.0 419.0,1.0 410.4,39.1 312.2,473.0 141.6,1196.3 14.0,1745.2 1202.1,2021.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0185/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[734.0,1339.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6374049,39.3011825]}},{"type":"Feature","properties":{"resourceCoords":[1371.0,750.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6363377,39.3025202]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0186/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p186","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0186/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0186","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"324.9,281.9 343.9,313.8 825.8,34.8 912.9,195.7 1296.5,905.1 1345.2,994.9 1424.0,1144.9 976.1,1431.3 968.8,1418.2 724.8,1562.8 496.5,1707.5 626.0,1952.2 590.5,1971.6 443.3,2052.0 423.0,2052.0 422.2,2063.5 422.0,2058.0 411.0,2052.0 325.0,2052.8 311.8,2049.8 200.4,2024.7 16.0,1983.0 16.0,1965.8 161.8,1324.2 191.9,1261.9 224.5,1224.0 218.1,1139.5 173.1,722.2 128.2,389.6 324.9,281.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0186/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[696.0,941.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63500873223484,39.30238583951328]}},{"type":"Feature","properties":{"resourceCoords":[237.0,1214.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63588587130403,39.30168296247466]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0187/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p187","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0187/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0187","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"184.2,391.1 456.4,373.1 742.5,362.8 742.7,377.9 1280.4,340.2 1279.9,627.9 1280.0,1320.6 1278.5,1939.0 1006.8,1957.9 1016.2,1910.4 948.5,1943.0 233.4,1941.2 178.4,1951.2 180.9,670.5 184.2,391.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0187/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[456.0,1265.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6331099,39.3001355]}},{"type":"Feature","properties":{"resourceCoords":[456.0,1942.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6320115,39.2992504]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0188/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p188","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0188/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0188","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"76.8,344.6 79.1,340.3 79.5,173.2 79.7,69.8 398.1,69.6 1373.5,72.3 1377.0,675.0 1373.6,1273.3 1372.9,1887.7 1317.7,1895.6 1052.1,1911.8 732.6,1923.4 732.6,1938.0 76.8,1947.9 78.5,1326.7 78.6,632.7 76.8,344.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0188/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[543.0,1273.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6309316,39.3017497]}},{"type":"Feature","properties":{"resourceCoords":[732.0,675.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6315816,39.3027666]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0189/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p189","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0189/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0189","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"733.8,145.9 1197.0,152.3 1191.9,1952.5 1191.9,1956.1 736.1,1953.7 347.4,1949.8 284.4,1958.9 284.6,1345.2 287.4,747.4 283.4,145.5 733.8,145.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0189/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[734.0,747.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6297409,39.3041354]}},{"type":"Feature","properties":{"resourceCoords":[493.0,146.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6311215,39.3046188]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0190/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p190","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"29"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0190/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0190","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"648.4,135.2 804.4,136.8 1300.3,139.2 1325.2,139.3 1319.2,1332.2 1326.9,1332.2 1327.1,1959.4 797.7,1959.8 797.8,1953.5 643.3,1953.8 643.4,1936.7 387.9,1940.6 131.2,1944.2 132.3,136.1 648.4,135.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0190/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[393.0,1334.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6275555,39.3042555]}},{"type":"Feature","properties":{"resourceCoords":[132.0,733.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6289624,39.3047142]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0191/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p191","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0191/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0191","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"420.2,115.7 420.1,121.5 1301.8,113.5 1301.5,715.2 1309.7,1607.9 1307.8,1900.6 724.1,1917.8 723.0,1925.8 186.3,1944.5 151.8,1929.9 141.8,727.9 134.0,727.9 132.2,116.9 420.2,115.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0191/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[720.0,722.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6250116,39.3061423]}},{"type":"Feature","properties":{"resourceCoords":[1011.0,1320.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.623563,39.3057156]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0192/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p192","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0192/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0192","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"138.9,1897.4 142.2,1607.5 138.3,723.2 141.5,127.2 726.8,126.7 1012.3,121.0 1265.4,120.8 1401.2,162.6 1400.2,433.1 1390.9,630.1 1372.0,713.4 1420.0,711.2 1420.0,868.4 1420.0,1049.6 1411.0,1092.6 1405.7,1144.5 1396.9,1275.0 1397.5,1554.7 1391.2,1909.9 1293.5,1913.5 1297.1,2049.7 1282.0,2045.0 1266.0,2045.0 1265.0,2050.0 1255.0,2051.0 1003.0,2053.0 984.0,2044.0 964.0,2044.0 963.0,2052.0 837.0,2055.0 631.0,2053.0 623.0,2044.0 580.0,2044.0 570.0,2054.0 477.0,2053.0 476.0,2066.0 468.0,2066.0 467.0,2054.0 418.0,2052.0 417.0,2066.0 416.0,2057.0 389.0,2053.0 387.0,2066.0 386.0,2056.0 364.0,2056.0 360.0,2052.0 259.0,2049.0 210.0,2055.0 187.0,2050.0 181.7,2050.2 179.7,2017.5 139.7,1973.7 138.9,1897.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0192/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[433.0,722.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6235335,39.3072401]}},{"type":"Feature","properties":{"resourceCoords":[433.0,126.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6244986,39.3080274]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0193/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p193","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.61"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0193/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0193","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"69.7,984.5 80.0,367.2 29.2,19.2 132.6,104.4 274.1,40.6 691.0,71.3 1003.6,269.1 1252.7,282.1 1272.2,531.6 1368.8,640.8 1399.8,814.5 1377.7,1469.9 1417.5,1506.9 1417.0,1578.0 1417.7,1676.8 1083.1,2053.0 1003.0,2053.0 955.0,2027.2 501.6,2014.7 470.1,2028.8 43.8,1994.8 44.4,1990.8 55.2,1946.7 67.5,1596.8 17.9,1597.4 40.4,1512.0 57.1,1308.7 69.7,984.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0193/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[335.0,1588.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6214538,39.3088378]}},{"type":"Feature","properties":{"resourceCoords":[361.0,991.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6223811,39.309607]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0194/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p194","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.45"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0194/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0194","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"23.9,1035.3 1.0,1035.5 1.0,1416.9 42.4,1369.0 142.9,1252.5 697.0,1698.0 681.8,1716.2 923.4,1877.7 941.0,1857.3 1089.3,1988.5 1159.2,2035.3 1248.0,1931.4 1291.6,1969.1 1349.2,1940.9 1355.3,1688.2 1373.0,1671.4 1184.5,1103.5 1133.3,1163.9 1010.0,218.3 1113.5,90.5 1037.5,94.0 990.9,71.7 560.1,79.5 530.8,94.2 124.7,80.7 120.4,127.8 113.1,256.1 116.7,530.9 114.2,880.0 18.3,884.5 23.9,1035.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0194/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[934.0,1845.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61696291617199,39.30659438704678]}},{"type":"Feature","properties":{"resourceCoords":[1155.0,2030.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61627361020548,39.30662176769557]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0195/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p195","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0195/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0195","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"7.0,465.6 71.4,534.8 81.6,1182.5 788.5,1833.8 789.0,1754.0 1267.7,2050.0 1271.0,2050.0 1272.0,2046.0 1304.2,2049.9 1395.5,1226.2 1357.8,107.5 89.0,64.0 70.9,415.8 1.0,415.4 1.0,422.5 7.0,465.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0195/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[794.0,757.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6178416,39.3097482]}},{"type":"Feature","properties":{"resourceCoords":[1372.0,757.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6164701,39.309803]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0196/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p196","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0196/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0196","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1028.8,176.4 731.8,213.1 731.5,188.7 9.0,213.8 9.0,371.0 1.0,371.9 1.0,1507.1 9.0,1508.0 9.0,1576.0 1.0,1577.8 1.0,1578.1 9.0,1579.0 9.8,1968.3 87.4,2046.0 92.0,2046.0 94.8,2053.4 95.3,2054.0 122.8,2052.8 148.6,2051.7 268.3,1918.5 333.0,1921.8 748.0,1909.0 1344.0,1903.3 1346.8,2047.3 1417.8,2040.4 1419.0,2040.0 1419.0,2029.4 1347.3,1894.5 1387.7,778.6 1321.2,131.3 1376.8,1.0 1317.8,1.0 1318.5,140.7 1232.6,151.3 1028.8,148.8 1028.8,176.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0196/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1039.0,1327.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6168076,39.3044676]}},{"type":"Feature","properties":{"resourceCoords":[748.0,1909.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6174351,39.3034017]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0197/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p197","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.81"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0197/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0197","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1360.5,2007.2 150.9,1943.5 154.6,1862.9 87.9,1696.3 131.8,1549.5 52.7,1166.7 125.8,50.0 371.7,49.8 555.5,49.8 592.9,49.7 630.6,49.7 955.5,49.5 1071.6,49.5 1353.9,49.4 1360.5,2007.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0197/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1382.0,797.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6538273,39.3050304]}},{"type":"Feature","properties":{"resourceCoords":[69.0,50.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6569858,39.3062763]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0198/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p198","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0198/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0198","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"130.7,1962.4 130.4,2054.0 118.6,2054.3 107.1,2054.7 104.4,55.1 132.2,55.2 1316.4,56.9 1315.0,428.9 1316.0,800.0 1320.8,800.0 1331.7,2002.1 130.7,1962.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0198/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1316.0,800.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.651019,39.3051253]}},{"type":"Feature","properties":{"resourceCoords":[724.0,56.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6525057,39.3064371]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0199/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p199","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0199/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0199","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1384.0,2031.1 1384.0,2043.7 80.0,1981.8 65.5,813.5 60.7,813.5 58.5,441.4 58.5,68.5 1385.7,66.0 1384.0,2003.0 1384.0,2031.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0199/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[652.0,814.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6496215,39.3051724]}},{"type":"Feature","properties":{"resourceCoords":[1384.0,2003.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6477666,39.3030576]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0200/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p200","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0200/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0200","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1401.4,50.8 1400.5,1991.0 1294.2,1992.4 63.3,1993.6 64.8,53.4 1401.4,50.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0200/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[64.0,1100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6478585,39.3046891]}},{"type":"Feature","properties":{"resourceCoords":[798.0,52.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6462365,39.306662]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0201/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p201","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0201/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0201","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"739.8,1997.8 437.0,1996.0 137.2,1997.4 137.0,55.5 180.9,56.0 538.8,53.3 740.0,54.0 1302.6,51.8 1338.0,93.1 1339.4,607.2 1335.8,810.6 1336.8,1290.1 1336.5,1996.9 739.8,1997.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0201/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[437.0,1996.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6439052,39.3031974]}},{"type":"Feature","properties":{"resourceCoords":[740.0,54.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6433916,39.3067641]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0202/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p202","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0202/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0202","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"427.4,443.6 841.6,85.8 1293.5,616.1 1331.2,710.6 1330.5,826.5 1322.8,1973.8 1322.5,2010.1 1020.9,2007.2 722.1,2007.2 121.3,2004.4 126.0,1297.0 128.1,817.0 133.0,613.4 134.8,98.8 427.4,443.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0202/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[124.0,816.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.64191850798659,39.3054330111537]}},{"type":"Feature","properties":{"resourceCoords":[1444.0,816.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63881071110518,39.30555361164058]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0203/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p203","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0203/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0203","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"719.8,1539.5 753.0,1442.1 754.5,737.4 200.9,740.0 202.8,282.6 203.2,227.5 203.9,138.1 1291.7,133.6 1282.5,735.0 1274.2,1336.8 1270.7,1939.6 1030.4,1939.2 958.8,1902.1 643.0,1628.0 719.8,1539.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0203/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[998.0,1933.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63798699711333,39.3055648292154]}},{"type":"Feature","properties":{"resourceCoords":[1277.0,1160.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63875345903139,39.30692327145657]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0204/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p204","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0204/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0204","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3.1,961.9 756.6,70.3 1077.9,341.9 1150.3,378.4 1392.1,375.6 1392.8,912.1 1400.3,1586.7 1401.0,1628.0 1403.8,1787.6 836.2,1813.8 834.0,1776.0 605.2,1781.0 677.1,1578.1 9.8,1015.8 3.1,961.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0204/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[834.0,1776.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6362652,39.3033705]}},{"type":"Feature","properties":{"resourceCoords":[990.0,268.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6383687,39.3055474]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0205/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p205","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"23"},{"label":"confidence","value":"1.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0205/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0205","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"647.6,1900.1 114.6,1887.2 119.7,1255.2 121.0,930.0 128.5,156.9 728.5,160.4 1330.9,163.9 1317.9,1909.9 647.6,1900.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0205/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[724.0,1258.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6354725,39.3058964]}},{"type":"Feature","properties":{"resourceCoords":[121.0,930.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6359033,39.3070891]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0206/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p206","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"22"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0206/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0206","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"162.4,1908.8 121.3,1908.5 133.0,163.0 1335.2,169.1 1332.3,621.0 1325.2,1598.7 1324.0,1917.9 506.4,1911.3 162.4,1908.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0206/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[728.0,1262.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6335308,39.3043345]}},{"type":"Feature","properties":{"resourceCoords":[133.0,163.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6326566,39.306486]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0207/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p207","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"38"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0207/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0207","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"219.0,139.0 508.9,139.0 553.0,135.8 949.8,140.4 1365.9,139.7 1357.3,780.9 1351.6,1336.3 1351.0,1944.4 1195.8,1942.4 682.5,1942.2 219.6,1935.8 219.2,738.7 219.0,139.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0207/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[684.0,1336.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6309025,39.3062878]}},{"type":"Feature","properties":{"resourceCoords":[219.0,139.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6336293,39.3072701]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0208__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 | 1914 | sanborn03573_009 p208 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"22"},{"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":"5764.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0208__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0208","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"74.7,139.4 65.2,778.4 58.8,1331.8 57.3,1937.8 548.9,1942.0 586.5,1942.2 624.0,1942.3 624.0,1832.8 553.6,1826.3 572.1,1333.0 499.5,1332.7 624.0,1003.0 624.0,895.2 664.8,895.2 723.5,739.5 1162.5,740.7 1167.0,139.0 565.9,140.3 74.7,139.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0208__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[573.0,1333.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6289005,39.3077717]}},{"type":"Feature","properties":{"resourceCoords":[1167.0,139.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6298396,39.3100856]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0208__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 | 1914 | sanborn03573_009 p208 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2496.0"},{"label":"split_canvas_y","value":"3580.8"},{"label":"split_canvas_w","value":"3268.0"},{"label":"split_canvas_h","value":"4687.2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0208__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0208","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"647.8,1859.3 1170.4,1873.8 1228.0,1868.7 1421.3,1654.7 1421.3,1646.5 1397.3,1643.1 1382.3,1431.4 1225.8,1262.3 1194.0,1132.0 1080.6,1039.1 863.7,1005.3 805.6,937.9 790.8,1037.1 666.0,1301.7 647.8,1859.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0208__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[900.0,1888.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62841768718805,39.309570831205676]}},{"type":"Feature","properties":{"resourceCoords":[1203.0,1888.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.62793375877193,39.30994947410012]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0209/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p209","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0209/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0209","type":"ImageService3","width":1444,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1229.7,234.9 1285.6,228.4 1299.9,238.6 1297.0,830.9 1301.8,830.9 1302.4,1436.4 1295.9,2035.0 415.1,2035.1 415.2,2029.2 127.5,2027.8 130.9,1446.8 143.8,1446.8 181.6,1446.9 181.3,1336.6 110.3,1330.3 127.7,833.2 54.5,833.1 179.0,500.7 178.7,392.1 219.8,391.9 278.5,235.0 720.7,234.9 1229.7,234.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0209/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[715.0,1437.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.626938,39.3077158]}},{"type":"Feature","properties":{"resourceCoords":[128.0,235.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6298662,39.3085515]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0210/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p210","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0210/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0210","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"854.5,86.3 1054.1,183.8 1267.8,405.1 1355.2,557.7 1298.2,1077.0 1307.6,1084.1 1369.0,1414.2 1382.0,2003.5 1382.0,2040.0 1372.0,2040.0 1368.7,2042.1 1247.8,2005.3 997.9,2006.5 716.0,2013.0 138.1,2015.7 139.8,1429.6 134.7,836.7 130.0,836.8 128.4,256.9 114.3,247.0 297.2,29.4 854.5,86.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0210/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[455.0,835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6263733,39.309646]}},{"type":"Feature","properties":{"resourceCoords":[716.0,2013.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.623996,39.3083947]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0211/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p211","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0211/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0211","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1382.1,1907.5 1341.7,1907.5 1075.2,1907.7 785.5,1907.8 140.2,1908.3 141.4,1890.8 72.4,1792.1 60.8,277.2 163.2,127.5 489.3,68.9 1379.8,205.2 1382.0,202.8 1382.1,1907.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0211/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1382.0,1218.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6539825,39.3076519]}},{"type":"Feature","properties":{"resourceCoords":[84.0,1218.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6570608,39.307543]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0212/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p212","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0212/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0212","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"135.5,187.3 258.9,47.0 363.3,37.0 804.6,131.7 1016.3,52.4 1328.8,103.9 1325.1,703.1 1330.5,1214.1 1330.0,1910.0 134.6,1910.1 135.5,187.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0212/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[732.0,1910.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6525057,39.3064371]}},{"type":"Feature","properties":{"resourceCoords":[1330.0,1910.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6511024,39.3064874]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0213/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p213","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0213/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0213","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"122.4,129.0 667.6,118.6 803.7,44.2 1388.8,116.7 1387.0,715.7 1381.2,1910.7 57.0,1908.0 59.0,1218.5 54.6,712.2 59.5,118.5 122.4,129.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0213/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[649.0,1220.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6497793,39.3078006]}},{"type":"Feature","properties":{"resourceCoords":[57.0,1908.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6511024,39.3064874]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0214/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p214","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0214/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0214","type":"ImageService3","width":1449,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"62.0,1918.0 62.2,711.5 61.3,106.8 264.7,48.8 663.8,96.0 948.9,34.1 1319.0,65.2 1405.7,143.3 1405.9,1211.3 1406.1,1914.5 62.0,1918.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0214/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[798.0,710.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6463633,39.3088514]}},{"type":"Feature","properties":{"resourceCoords":[62.0,1918.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6479662,39.3066]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0215/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p215","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"23"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0215/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0215","type":"ImageService3","width":1446,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"41.7,1373.6 126.6,1282.2 406.4,785.5 405.2,613.0 479.9,510.8 453.9,375.8 682.6,336.0 1007.9,83.5 1173.9,46.0 1238.5,95.8 1260.4,72.2 1257.0,546.0 1249.1,1629.8 1212.0,1630.0 871.0,2024.5 852.0,2062.3 41.7,1373.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0215/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1255.0,820.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6420915,39.3089935]}},{"type":"Feature","properties":{"resourceCoords":[629.0,1090.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.643563,39.3094953]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0216/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p216","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0216/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0216","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"74.5,1612.5 93.3,1573.8 434.5,1168.7 472.2,1167.9 466.0,67.0 984.8,64.8 1256.2,61.0 1285.1,1152.6 1374.9,1151.3 1012.0,1593.1 881.0,1750.1 651.1,2031.9 632.9,2053.4 606.8,2053.2 74.5,1612.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0216/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1330.0,1152.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6421366,39.3068722]}},{"type":"Feature","properties":{"resourceCoords":[466.0,67.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6416148,39.3093312]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0217__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 | 1914 | sanborn03573_009 p217 [1]","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"19"},{"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":"5772.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0217__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0217","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"798.1,1907.0 1398.7,1912.3 1380.0,204.0 1181.2,204.2 1118.7,183.6 987.6,83.2 842.8,111.5 600.6,294.1 531.3,587.0 209.8,767.0 40.8,1396.2 17.1,1421.5 12.1,1900.2 528.2,1906.3 798.1,1907.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0217__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[792.0,1311.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6393669,39.3090289]}},{"type":"Feature","properties":{"resourceCoords":[1380.0,204.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.636542,39.3096183]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0217__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 | 1914 | sanborn03573_009 p217 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"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":"1994.0"},{"label":"split_canvas_h","value":"2358.0"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0217__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0217","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"402.9,27.7 370.7,1.0 218.2,1.0 81.6,29.0 29.8,383.0 20.6,384.8 20.5,393.3 144.4,487.8 207.6,508.6 408.7,508.2 402.9,27.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0217__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[410.4,54.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63577151364132,39.31017029851089]}},{"type":"Feature","properties":{"resourceCoords":[410.4,506.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63653659631872,39.30961801371245]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0218/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p218","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"25"},{"label":"confidence","value":"1.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0218/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0218","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"102.7,206.5 1301.2,181.5 1314.2,951.1 1321.5,1274.7 1333.2,1903.8 733.3,1908.7 134.2,1908.8 102.7,206.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0218/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[520.0,1909.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6388137,39.3069722]}},{"type":"Feature","properties":{"resourceCoords":[710.0,643.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6363308,39.3082728]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0219/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p219","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"29"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0219/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0219","type":"ImageService3","width":1443,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"679.7,115.3 710.0,85.3 707.4,82.6 708.2,8.6 735.8,76.5 861.9,73.6 1096.4,204.9 1254.1,201.3 1336.8,293.8 1291.0,618.1 1318.7,681.2 1357.0,879.3 1358.4,1312.7 1356.4,1907.9 940.6,1909.6 544.2,1905.8 500.1,1909.1 210.5,1909.8 209.0,1313.1 205.8,115.5 679.7,115.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0219/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[439.0,1313.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.634208,39.3083393]}},{"type":"Feature","properties":{"resourceCoords":[439.0,709.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6351858,39.3091317]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0220/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1914 | sanborn03573_009 p220","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:08:21Z","modified":"2026-10-24T15:08:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0220/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0220","type":"ImageService3","width":1431,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"146.3,1326.5 139.9,897.9 99.8,702.4 71.7,640.3 113.2,319.0 219.7,435.2 358.0,373.1 577.1,386.3 864.6,574.0 1141.8,913.1 1083.1,1170.2 1235.5,1362.6 1266.8,1512.5 1354.5,1606.4 1344.2,1702.0 1234.9,1960.2 1234.4,1898.3 638.4,1908.7 151.2,1915.3 146.3,1326.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573191402:03573_02_1914-0220/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[348.0,765.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63320776526169,39.3104965901548]}},{"type":"Feature","properties":{"resourceCoords":[348.0,1902.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.63136979261174,39.30897192154414]}}]}}]}