{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03573_015.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Baltimore, Maryland | 1936 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"87"},{"label":"placed","value":"67"},{"label":"unplaced","value":"20"},{"label":"fit sources","value":"georef 48, georef-snap 17, snap:0 1, georef-street 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 10 panels"},{"label":"unplaced pages","value":"p533 (tier 1, 39.31066,-76.56880 +/-496m); p542 (tier 1, 39.29243,-76.55597 +/-491m); p543 (tier 1, 39.28855,-76.54757 +/-250m); p544__1 (tier 1, 39.30615,-76.53151 +/-495m); p544__2 (tier 2, 39.28704,-76.55466 +/-100m); p544__3 (tier 2, 39.28704,-76.55466 +/-100m); p544__4 (tier 1, 39.31049,-76.53045 +/-100m); p552__2 (tier 1, 39.28284,-76.56821 +/-102m); p552__3 (tier 1, 39.28605,-76.54699 +/-100m); p567 (tier 2, 39.27097,-76.56871 +/-100m); p568 (tier 4, 39.28525,-76.55988 +/-3909m); p569 (tier 2, 39.26034,-76.55787 +/-100m); p571 (tier 2, 39.26883,-76.55833 +/-821m); p572 (tier 3, 39.26563,-76.55930 +/-867m); p573 (tier 2, 39.27150,-76.55126 +/-126m); p574 (tier 1, 39.27059,-76.54462 +/-247m); p575__1 (tier 2, 39.26368,-76.53509 +/-100m); p575__2 (tier 1, 39.26107,-76.54275 +/-104m); p575__3 (tier 1, 39.25967,-76.54123 +/-100m); p576 (tier 2, 39.27006,-76.53580 +/-501m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p0","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0000/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0000","type":"ImageService3","width":1408,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"52.0,0.0 55.8,166.2 583.3,148.2 595.4,553.9 1154.0,539.9 1177.0,1352.0 1408.0,1345.5 1408.0,1740.4 92.3,1773.5 98.7,2067.0 60.4,2067.0 54.8,1774.4 0.0,1775.7 7.5,0.0 52.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0000/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56620320036996,39.28049113618637]}},{"type":"Feature","properties":{"resourceCoords":[1408.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56627963780706,39.28307190690286]}},{"type":"Feature","properties":{"resourceCoords":[1408.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56141906031179,39.28315937371759]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56134262287468,39.280578603001096]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0501/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p501","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"19"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0501/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0501","type":"ImageService3","width":1403,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1055.5,0.0 1059.4,139.8 1211.6,140.4 1187.7,734.7 1269.9,736.5 1224.7,1923.9 -0.0,1913.9 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0501/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[757.0,1357.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5737379,39.2980686]}},{"type":"Feature","properties":{"resourceCoords":[757.0,731.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5738221,39.2991795]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0502/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p502","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0502/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0502","type":"ImageService3","width":1403,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"91.0,728.2 8.9,726.2 34.6,132.9 -0.0,132.6 -0.0,-0.0 107.7,0.0 105.1,117.4 225.8,133.3 680.7,346.0 680.6,348.4 1262.3,634.1 1403.0,665.9 1403.0,742.5 1297.0,741.2 1285.0,1927.0 42.3,1913.6 91.0,728.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0502/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[567.0,1359.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.571463,39.2981543]}},{"type":"Feature","properties":{"resourceCoords":[1285.0,1927.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5697338,39.2972236]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0503/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p503","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0503/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0503","type":"ImageService3","width":1404,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2067.0 -0.0,-0.0 1290.9,46.9 1208.9,2042.5 1051.0,2038.8 949.2,2036.6 796.2,2033.3 183.0,2020.0 100.8,2018.2 99.7,2067.0 -0.0,2067.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0503/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[809.0,1317.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5735019,39.2947495]}},{"type":"Feature","properties":{"resourceCoords":[183.0,2020.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5748472,39.2933954]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0504/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p504","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0504/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0504","type":"ImageService3","width":1410,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1334.5,1865.9 43.7,1864.1 89.5,202.4 1335.6,203.8 1334.5,1865.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0504/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5728182529894,39.297464484933634]}},{"type":"Feature","properties":{"resourceCoords":[1410.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56958745089365,39.297594341649926]}},{"type":"Feature","properties":{"resourceCoords":[1410.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56934319000916,39.2939031756648]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57257399210492,39.29377331894851]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0505/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p505","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0505/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0505","type":"ImageService3","width":1403,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1987.0 -0.0,94.4 1115.4,95.0 1122.2,717.6 1323.2,717.6 1320.3,1355.0 703.8,1355.0 703.1,1986.5 -0.0,1987.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0505/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[397.0,1355.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5739671,39.2911539]}},{"type":"Feature","properties":{"resourceCoords":[83.0,1355.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5746978,39.2911252]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0506/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p506","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0506/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0506","type":"ImageService3","width":1407,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1319.6,1846.8 243.8,1850.0 244.8,1205.7 41.6,1206.2 27.1,211.3 1312.0,208.0 1319.6,1846.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0506/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[567.0,1849.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5710742,39.2912676]}},{"type":"Feature","properties":{"resourceCoords":[1315.0,1203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5694232,39.2924826]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0507/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p507","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0507/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0507","type":"ImageService3","width":1406,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"843.5,1804.6 28.5,1798.3 31.6,453.9 1387.2,276.1 1344.8,1424.2 841.5,1441.8 843.5,1804.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0507/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56977888965982,39.29685067404963]}},{"type":"Feature","properties":{"resourceCoords":[1406.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56653434218602,39.296978860586144]}},{"type":"Feature","properties":{"resourceCoords":[1406.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56629253906748,39.29326141208587]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56953708654127,39.293133225549354]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0508/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p508","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0508/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0508","type":"ImageService3","width":1409,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1206.7,1595.2 175.2,1604.4 168.4,1108.0 418.9,1102.2 436.8,519.9 1197.5,389.6 1206.7,1595.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0508/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5686510699141,39.29827885836376]}},{"type":"Feature","properties":{"resourceCoords":[1409.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56217464576855,39.29848548116452]}},{"type":"Feature","properties":{"resourceCoords":[1409.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56178571734998,39.2910808604666]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56826214149552,39.29087423766584]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0509/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p509","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0509/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0509","type":"ImageService3","width":1414,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1282.7,293.4 1277.0,1889.8 1015.4,1888.4 1014.5,2067.0 634.2,2067.0 645.2,644.7 74.4,639.4 74.9,297.1 1282.7,293.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0509/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56139946637171,39.293971660928854]}},{"type":"Feature","properties":{"resourceCoords":[1414.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5612101796941,39.29142236350723]}},{"type":"Feature","properties":{"resourceCoords":[1414.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56599163870565,39.29120670715629]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56618092538326,39.293756004577915]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0510/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p510","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"18"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0510/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0510","type":"ImageService3","width":1414,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1059.0,206.6 1321.9,207.4 1308.5,1821.3 35.4,1820.1 45.2,1008.9 672.5,1010.3 676.2,385.6 1058.5,384.9 1059.0,206.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0510/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1319.0,716.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5667789,39.2914269]}},{"type":"Feature","properties":{"resourceCoords":[669.0,1821.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5694232,39.2924826]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0511/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p511","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0511/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0511","type":"ImageService3","width":1412,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1349.1,1807.3 67.7,1806.7 74.0,263.5 1350.0,264.0 1349.1,1807.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0511/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[73.0,900.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5731801,39.2900447]}},{"type":"Feature","properties":{"resourceCoords":[1350.0,264.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5703072,39.2912977]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0512/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p512","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0512/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0512","type":"ImageService3","width":1412,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1300.2,1801.5 79.8,1794.5 81.9,265.2 496.4,265.7 1216.2,269.2 1301.3,273.4 1300.2,1801.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0512/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1301.0,1350.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5673361,39.2894562]}},{"type":"Feature","properties":{"resourceCoords":[81.0,901.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5702323,39.2901514]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0513/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p513","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"20"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0513/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0513","type":"ImageService3","width":1416,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1335.2,247.8 1345.0,1340.0 1203.1,1317.4 1209.4,1803.8 97.0,1805.9 86.3,256.6 1335.2,247.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0513/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[903.0,893.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5655236,39.2903296]}},{"type":"Feature","properties":{"resourceCoords":[1345.0,1340.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.564462,39.2895693]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0514/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p514","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0514/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0514","type":"ImageService3","width":1415,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1415.0,2067.0 861.6,2067.0 860.9,1815.5 450.9,1814.9 438.4,1349.3 45.1,1351.0 38.3,259.7 1415.0,250.0 1415.0,2067.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0514/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56471154171345,39.29197049522415]}},{"type":"Feature","properties":{"resourceCoords":[1415.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56147975282455,39.29209012021044]}},{"type":"Feature","properties":{"resourceCoords":[1415.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56125555051024,39.28841058581668]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56448733939914,39.28829096083039]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0515/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p515","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0515/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0515","type":"ImageService3","width":1415,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1351.6,464.8 1358.7,1608.7 -0.0,1610.7 0.0,-0.0 55.2,0.0 52.3,462.5 1351.6,464.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0515/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57325906887844,39.28924020397162]}},{"type":"Feature","properties":{"resourceCoords":[1415.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57003772286842,39.289370971772264]}},{"type":"Feature","properties":{"resourceCoords":[1415.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56979264613935,39.28570318404279]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57301399214937,39.28557241624215]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0516/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p516","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0516/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0516","type":"ImageService3","width":1408,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1296.8,478.2 1295.0,1597.0 83.9,1591.5 79.6,468.6 1296.8,478.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0516/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[79.0,1031.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5700574,39.2875238]}},{"type":"Feature","properties":{"resourceCoords":[1295.0,1597.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5671462,39.2866197]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0517/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p517","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0517/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0517","type":"ImageService3","width":1405,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1405.0,1598.9 125.3,1591.6 128.5,456.2 1283.3,466.7 1284.5,750.6 1239.6,750.5 1240.2,1028.0 1405.0,1028.0 1405.0,1598.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0517/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[937.0,1028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5653501,39.2877034]}},{"type":"Feature","properties":{"resourceCoords":[127.0,1028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.567214,39.2876236]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0518/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p518","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0518/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0518","type":"ImageService3","width":1412,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"161.8,1028.5 -0.0,1028.2 -0.0,755.8 44.0,756.0 43.5,477.3 -0.0,476.8 -0.0,0.0 521.9,25.9 529.5,482.6 928.8,487.0 927.1,733.7 1412.0,738.2 1412.0,1425.2 921.2,1582.8 160.8,1589.0 161.8,1028.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0518/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[44.0,756.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5645859,39.2882316]}},{"type":"Feature","properties":{"resourceCoords":[925.0,1030.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5624845,39.2878261]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0519/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p519","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0519/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0519","type":"ImageService3","width":1418,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1181.0,179.5 1188.0,1889.4 16.6,1888.5 -0.0,-0.0 829.3,0.0 829.6,180.7 1181.0,179.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0519/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[569.0,749.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5736064,39.285348]}},{"type":"Feature","properties":{"resourceCoords":[258.0,749.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5743264,39.2853202]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0520/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p520","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0520/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0520","type":"ImageService3","width":1418,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"196.7,1900.6 185.7,185.1 1173.8,182.8 1176.9,1898.0 196.7,1900.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0520/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[841.0,755.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5706804,39.2854609]}},{"type":"Feature","properties":{"resourceCoords":[1177.0,1612.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5698109,39.2839589]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0521/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p521","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"19"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0521/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0521","type":"ImageService3","width":1418,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1321.6,1970.7 104.4,1983.6 88.9,278.4 1307.7,267.1 1321.6,1970.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0521/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[93.0,1128.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5698861,39.2849848]}},{"type":"Feature","properties":{"resourceCoords":[916.0,1975.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.567896,39.2835223]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0522/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p522","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0522/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0522","type":"ImageService3","width":1418,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1110.5,1974.0 289.0,1974.0 299.0,262.1 1105.8,265.8 1110.5,1974.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0522/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[695.0,1974.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5660172,39.2835988]}},{"type":"Feature","properties":{"resourceCoords":[289.0,1974.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5669547,39.2835594]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0523/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p523","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"20"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0523/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0523","type":"ImageService3","width":1412,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"258.7,1974.4 164.4,1974.6 165.2,2067.0 -0.0,2067.0 -0.0,192.7 1175.2,182.5 1190.4,1876.0 883.0,1877.5 881.5,1799.5 256.4,1803.3 258.7,1974.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0523/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[875.0,1320.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5726282,39.2813061]}},{"type":"Feature","properties":{"resourceCoords":[569.0,752.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5733877,39.2822988]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0524/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p524","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0524/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0524","type":"ImageService3","width":1392,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"167.9,1882.7 171.8,180.9 1156.8,182.3 1153.8,1889.2 167.9,1882.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0524/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[821.0,749.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5704833,39.2824102]}},{"type":"Feature","properties":{"resourceCoords":[821.0,182.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5705507,39.2834178]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0525/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p525","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0525/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0525","type":"ImageService3","width":1392,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"122.0,1890.9 113.2,194.3 1336.0,187.0 1344.6,1890.6 1370.0,1899.5 122.0,1890.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0525/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[532.0,755.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5687538,39.2824791]}},{"type":"Feature","properties":{"resourceCoords":[1336.0,187.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5669547,39.2835594]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0526/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p526","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0526/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0526","type":"ImageService3","width":1386,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"261.7,185.9 1020.5,178.6 1032.0,2067.0 755.0,2067.0 270.7,1895.5 261.7,185.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0526/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1089.0,1319.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5649331,39.2816059]}},{"type":"Feature","properties":{"resourceCoords":[669.0,182.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5660172,39.2835988]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0527/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p527","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0527/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0527","type":"ImageService3","width":1393,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"901.9,2067.0 901.8,1971.0 80.8,1971.7 69.1,270.5 1304.6,259.1 1302.2,2067.0 901.9,2067.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0527/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[493.0,1970.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5641021,39.2836793]}},{"type":"Feature","properties":{"resourceCoords":[901.0,271.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5633538,39.2867653]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0528/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p528","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0528/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0528","type":"ImageService3","width":1404,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"889.0,277.3 1290.8,277.6 1291.3,0.0 1404.0,0.0 1404.0,1867.7 1286.5,1867.0 1290.3,519.4 889.0,508.4 889.0,745.0 136.8,745.9 284.0,2064.8 -0.0,2063.1 -0.0,181.5 889.0,181.0 889.0,277.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0528/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[889.0,745.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5630879,39.2827058]}},{"type":"Feature","properties":{"resourceCoords":[889.0,181.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.563154,39.2837143]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0529/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p529","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0529/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0529","type":"ImageService3","width":1420,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1527.5 -0.0,298.0 94.2,298.6 93.3,127.6 718.0,129.0 718.9,206.8 1337.6,209.1 1337.6,1350.6 1420.0,1350.7 1420.0,2000.6 1178.8,1922.7 1178.8,1924.2 -0.0,1527.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0529/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1027.0,1350.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5717177,39.2782948]}},{"type":"Feature","properties":{"resourceCoords":[413.0,299.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5732537,39.2801194]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0530/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p530","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0530/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0530","type":"ImageService3","width":1418,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"241.0,1851.9 240.7,1790.2 240.7,1790.2 238.5,1203.5 156.3,1203.6 151.9,64.6 1234.1,64.3 1242.1,1915.7 1418.0,1916.7 1418.0,1976.6 708.1,1946.0 241.0,1851.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0530/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[492.0,1203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5702236,39.2783489]}},{"type":"Feature","properties":{"resourceCoords":[1239.0,1203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.568495,39.278409]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0531/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p531","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0531/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0531","type":"ImageService3","width":1418,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"304.0,1983.2 288.6,1922.7 109.8,1920.8 108.7,51.8 1418.0,71.3 1418.0,1986.2 304.0,1983.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0531/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5688777860238,39.28053064242409]}},{"type":"Feature","properties":{"resourceCoords":[1418.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56565091123878,39.2806538835614]}},{"type":"Feature","properties":{"resourceCoords":[1418.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56542045784182,39.27698711762352]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56864733262685,39.27686387648621]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0532/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p532","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0532/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0532","type":"ImageService3","width":1392,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2067.0 -0.0,-0.0 1392.0,0.0 1392.0,2067.0 -0.0,2067.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0532/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57595010091343,39.30841304576796]}},{"type":"Feature","properties":{"resourceCoords":[1392.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57278285507472,39.30854805930849]}},{"type":"Feature","properties":{"resourceCoords":[1392.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57252556989853,39.304883288507334]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57569281573724,39.304748274966805]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0534/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p534","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0534/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0534","type":"ImageService3","width":1410,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1323.3,1412.1 1308.0,1472.9 1088.9,1891.7 1070.7,1970.2 1019.7,1967.8 1018.5,2014.6 1076.2,2016.0 1074.5,2067.0 -0.0,2067.0 -0.0,0.0 889.0,14.6 895.2,191.8 1368.0,210.1 1376.7,-0.0 1409.0,-0.0 1356.6,1413.0 1323.3,1412.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0534/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1336.0,1454.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5698565,39.2994111]}},{"type":"Feature","properties":{"resourceCoords":[1336.0,1983.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5726453,39.2992232]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0535/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p535","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0535/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0535","type":"ImageService3","width":1407,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"259.4,1758.6 259.4,1705.9 261.6,331.4 963.6,323.6 1173.9,1757.4 259.4,1758.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0535/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56180449202273,39.300590090362434]}},{"type":"Feature","properties":{"resourceCoords":[1407.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56147268029028,39.295520338108844]}},{"type":"Feature","properties":{"resourceCoords":[1407.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57102952719747,39.29514044920856]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57136133892992,39.30021020146215]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0536/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p536","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"15"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0536/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0536","type":"ImageService3","width":1407,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"292.1,1271.5 534.6,1272.7 533.4,1235.6 292.2,1233.4 295.8,690.5 498.7,676.9 493.8,0.0 1407.0,0.0 1407.0,1240.0 836.9,1236.5 836.9,1274.0 911.7,1274.6 914.2,1801.3 296.9,1981.1 292.1,1271.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0536/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[707.0,291.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5616114,39.3031621]}},{"type":"Feature","properties":{"resourceCoords":[917.0,291.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5606443,39.3032031]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0537/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p537","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0537/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0537","type":"ImageService3","width":1386,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1305.4,2067.0 51.9,2067.0 66.3,209.9 797.3,0.0 1317.7,0.0 1311.2,1089.6 1386.0,1171.7 1386.0,1285.0 1309.9,1311.9 1305.4,2067.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0537/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56325078545945,39.297423434844596]}},{"type":"Feature","properties":{"resourceCoords":[1386.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56010371225199,39.297561553480705]}},{"type":"Feature","properties":{"resourceCoords":[1386.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.55983941207106,39.29390378545648]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56298648527851,39.29376566682037]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0538/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p538","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0538/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0538","type":"ImageService3","width":1386,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"195.0,1349.8 -0.0,1347.2 -0.0,137.1 883.5,140.5 878.3,633.5 1386.0,637.1 1386.0,2067.0 185.5,2067.0 195.0,1349.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0538/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[884.0,87.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5600287,39.293992]}},{"type":"Feature","properties":{"resourceCoords":[441.0,1987.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5607912,39.2905256]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0539/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p539","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0539/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0539","type":"ImageService3","width":1395,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"139.5,1977.0 140.7,1277.5 196.1,1278.2 209.0,188.2 1395.0,187.3 1395.0,931.9 1071.3,924.8 1049.8,1930.5 1395.0,1987.2 1395.0,2030.3 1140.5,1972.8 139.5,1977.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0539/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56187718502109,39.290666984450574]}},{"type":"Feature","properties":{"resourceCoords":[1395.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5586886478322,39.290814462608544]}},{"type":"Feature","properties":{"resourceCoords":[1395.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.55840828511018,39.28713205837336]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56159682229907,39.28698458021539]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0540/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p540","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0540/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0540","type":"ImageService3","width":1385,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1206.3,-0.0 1228.9,1242.7 1143.6,1505.2 1108.1,1590.3 1077.1,1666.5 1055.9,1736.0 1010.9,2067.0 -0.0,2067.0 -0.0,0.0 1206.3,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0540/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[99.0,1578.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5581733,39.2889897]}},{"type":"Feature","properties":{"resourceCoords":[1219.0,931.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5565928,39.2870455]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0541/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p541","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0541/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0541","type":"ImageService3","width":1402,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"76.7,772.3 -0.0,772.5 -0.0,720.1 76.5,697.6 75.9,162.1 -0.0,161.6 -0.0,123.5 586.4,126.2 578.5,0.0 1402.0,0.0 1402.0,2067.0 74.8,2067.0 76.9,1433.6 167.9,1421.2 77.3,1321.5 76.7,772.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0541/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[76.0,1717.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5600445,39.2942373]}},{"type":"Feature","properties":{"resourceCoords":[76.0,143.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.560425,39.2997636]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0545/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p545","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0545/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0545","type":"ImageService3","width":1398,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1301.9,1838.6 -0.0,1819.4 -0.0,-0.0 1398.0,0.0 1398.0,196.0 1316.6,195.0 1301.9,1838.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0545/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5470317362379,39.2907306288208]}},{"type":"Feature","properties":{"resourceCoords":[1398.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.54380550934414,39.29089286537068]}},{"type":"Feature","properties":{"resourceCoords":[1398.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.54349775182882,39.287174932427185]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.54672397872258,39.28701269587731]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0546/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p546","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0546/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0546","type":"ImageService3","width":1401,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"33.1,182.5 116.1,182.6 113.8,0.0 1401.0,0.0 1401.0,1913.7 1297.7,1913.2 1298.1,1859.0 1138.8,1858.7 1137.8,2067.0 322.8,2067.0 38.4,1856.3 33.1,182.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0546/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.54406121932435,39.29085223581187]}},{"type":"Feature","properties":{"resourceCoords":[1401.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.54088408931948,39.29098195942796]}},{"type":"Feature","properties":{"resourceCoords":[1401.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.54063853443206,39.28732845084043]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.54381566443693,39.287198727224336]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0547/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p547","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"11"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0547/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0547","type":"ImageService3","width":1396,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1247.9,1690.3 1251.4,1961.5 1396.0,1960.9 1396.0,1983.7 1215.3,1983.8 1215.3,1958.3 1017.6,1941.0 798.4,1963.2 274.2,1961.9 271.3,1021.4 214.6,1021.6 213.6,247.6 459.9,165.1 962.4,156.6 1089.6,183.9 1082.1,160.1 1116.7,171.0 1153.5,186.4 1153.5,209.9 1279.7,251.5 1163.5,258.2 1167.2,814.8 1331.2,815.6 1332.5,1107.3 1396.0,1106.8 1396.0,1689.9 1247.9,1690.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0547/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[666.0,254.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5603419,39.2868787]}},{"type":"Feature","properties":{"resourceCoords":[215.0,1396.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5621617,39.2827429]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0548/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p548","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0548/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0548","type":"ImageService3","width":1386,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"183.2,1028.4 143.4,203.2 161.6,-0.0 1386.0,-0.0 1386.0,744.1 1182.0,741.8 1181.7,1605.6 1142.5,1837.7 265.0,1837.1 266.4,1547.2 196.3,1555.1 212.3,1028.5 183.2,1028.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0548/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5574839,39.2814749]}},{"type":"Feature","properties":{"resourceCoords":[1386.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5571788,39.2766863]}},{"type":"Feature","properties":{"resourceCoords":[1386.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56640460000001,39.2763341]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5667097,39.2811227]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0549/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p549","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0549/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0549","type":"ImageService3","width":1392,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"408.9,1880.7 354.3,1881.1 352.2,1305.2 26.1,1303.1 19.7,204.7 250.6,191.7 -0.0,109.2 -0.0,62.9 345.9,186.7 1353.6,178.5 1362.2,1875.2 1001.5,1877.1 1003.7,2067.0 480.4,2067.0 480.6,1880.3 408.9,1880.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0549/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.55812623052879,39.28731258554988]}},{"type":"Feature","properties":{"resourceCoords":[1392.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.55491288529237,39.28743474474855]}},{"type":"Feature","properties":{"resourceCoords":[1392.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.55468016590608,39.283715510923805]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5578935111425,39.28359335172513]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0550/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p550","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"21"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0550/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0550","type":"ImageService3","width":1383,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"46.5,2.1 1383.0,0.0 1265.2,35.5 1278.9,1139.0 1383.0,1136.8 1383.0,2067.0 927.4,2067.0 925.4,1704.9 67.6,1706.1 46.5,2.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0550/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[463.0,577.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5539624,39.2861106]}},{"type":"Feature","properties":{"resourceCoords":[923.0,1143.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5528435,39.2851301]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0551/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p551","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0551/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0551","type":"ImageService3","width":1382,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"96.0,56.3 213.6,21.8 1382.0,0.0 1382.0,108.9 874.8,244.9 874.0,581.0 511.4,582.9 663.9,1151.8 870.8,1150.2 873.0,1442.3 203.0,1455.5 205.2,1154.0 101.5,1155.3 96.0,56.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0551/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[874.0,581.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.550289,39.286264]}},{"type":"Feature","properties":{"resourceCoords":[455.0,2030.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5510997,39.283621]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0552__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 | 1936 | sanborn03573_015 p552 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5544.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0552__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0552","type":"ImageService3","width":1386,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1386.0,1988.2 1386.0,1928.8 1261.9,1823.9 1180.4,1611.6 936.4,1613.2 929.2,693.2 1386.0,690.2 1386.0,608.9 750.0,438.0 681.1,484.6 378.7,403.1 299.0,705.5 192.5,790.2 -0.0,1503.0 0.0,1649.7 -0.0,1894.5 127.5,1929.1 91.3,2067.0 322.9,2067.0 343.3,1988.3 645.9,2067.0 1240.6,2067.0 1251.7,2025.1 1269.5,1958.0 1386.0,1988.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0552__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[328.0,1359.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5467139,39.2861874]}},{"type":"Feature","properties":{"resourceCoords":[328.0,1155.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5455643,39.2864729]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0553/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p553","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0553/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0553","type":"ImageService3","width":1379,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"77.7,1054.7 128.2,1054.7 123.7,113.8 -0.0,114.4 -0.0,-0.0 1379.0,0.0 1379.0,2067.0 601.4,2067.0 279.8,1779.5 80.2,1781.5 80.0,1600.9 -0.0,1529.3 -0.0,1028.4 77.8,1028.1 77.7,1054.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0553/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[478.0,627.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5391255,39.2891967]}},{"type":"Feature","properties":{"resourceCoords":[898.0,2315.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5368061,39.2831973]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0554/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p554","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0554/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0554","type":"ImageService3","width":1383,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"456.1,1960.0 457.6,2067.0 127.5,2067.0 100.8,0.0 1383.0,0.0 1383.0,1941.7 456.1,1960.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0554/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.53552570943815,39.291512395151564]}},{"type":"Feature","properties":{"resourceCoords":[1383.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5293049106065,39.291680294113284]}},{"type":"Feature","properties":{"resourceCoords":[1383.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.52898296144106,39.28443354114261]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.53520376027271,39.28426564218089]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0555/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p555","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0555/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0555","type":"ImageService3","width":1374,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"640.1,1001.3 640.2,978.8 497.4,979.0 494.8,711.0 641.1,711.1 642.8,228.6 902.9,229.1 902.0,134.0 1081.3,133.4 1079.5,978.3 1015.4,978.4 1015.8,1002.1 1079.4,1002.2 1078.6,1950.6 1374.0,1958.7 1374.0,2067.0 459.9,2067.0 461.6,1000.9 640.1,1001.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0555/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[693.0,1957.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5561417,39.2774319]}},{"type":"Feature","properties":{"resourceCoords":[902.0,134.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.555603,39.284023]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0556/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p556","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0556/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0556","type":"ImageService3","width":1381,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"78.7,113.1 501.7,123.9 498.0,301.2 722.9,300.6 730.8,0.0 1062.7,0.0 1059.9,247.4 1240.5,969.6 1381.0,972.0 1381.0,1571.5 1083.9,1330.3 812.7,1694.9 616.9,1860.4 496.1,1905.0 186.1,1917.6 47.0,1899.0 63.0,966.9 -0.0,965.7 -0.0,942.4 63.5,943.4 78.7,113.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0556/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.55517518142999,39.28445183145698]}},{"type":"Feature","properties":{"resourceCoords":[1381.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.54870251476994,39.28479328764959]}},{"type":"Feature","properties":{"resourceCoords":[1381.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.54804688522832,39.277241438309424]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.55451955188836,39.27689998211681]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0557/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p557","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"18"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0557/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0557","type":"ImageService3","width":1387,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"37.8,0.0 239.9,0.0 562.2,294.3 1348.8,302.6 1349.1,271.9 1387.0,272.8 1387.0,497.4 1066.9,710.2 1079.2,960.8 1065.3,963.9 1061.2,1607.2 1018.5,1606.8 1013.4,2067.0 -0.0,2067.0 -0.0,670.8 31.2,662.7 37.8,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0557/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1101.0,956.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5355876,39.2818016]}},{"type":"Feature","properties":{"resourceCoords":[1223.0,1171.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5349691,39.2810612]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0558/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p558","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"12"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0558/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0558","type":"ImageService3","width":1379,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,928.4 -0.0,704.8 317.0,491.6 315.6,268.2 599.3,272.9 599.5,168.0 1379.0,164.9 1379.0,2067.0 1310.2,2067.0 1311.0,1883.9 1330.4,1877.9 1167.0,1684.8 400.1,1925.2 332.5,1707.6 294.4,1737.8 250.6,1598.3 -0.0,1597.2 -0.0,957.5 13.8,954.4 -0.0,928.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0558/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[498.0,375.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5335904,39.2839376]}},{"type":"Feature","properties":{"resourceCoords":[1011.0,1496.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5309544,39.2800266]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0559/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p559","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"2"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0559/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0559","type":"ImageService3","width":1396,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 357.9,0.0 357.9,115.8 1031.3,342.1 1343.8,400.7 1344.0,2067.0 -0.0,2067.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0559/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1344.0,1616.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.569067,39.2725892]}},{"type":"Feature","properties":{"resourceCoords":[1344.0,2012.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5689747,39.2711453]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0560/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p560","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0560/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0560","type":"ImageService3","width":1375,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,2067.0 0.0,0.0 1375.0,0.0 1375.0,2067.0 0.0,2067.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0560/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1157.0,1839.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5558159,39.2716358]}},{"type":"Feature","properties":{"resourceCoords":[1157.0,211.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5561417,39.2774319]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0561/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p561","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0561/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0561","type":"ImageService3","width":1401,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"267.5,1989.0 270.8,1104.2 246.3,1104.5 283.1,870.2 273.5,-0.0 747.8,-0.0 769.8,1769.2 1401.0,1758.9 1401.0,1976.0 267.5,1989.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0561/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[276.0,1775.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5684015,39.277025]}},{"type":"Feature","properties":{"resourceCoords":[276.0,289.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5618152,39.2772191]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0562/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p562","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0562/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0562","type":"ImageService3","width":1378,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1378.0,2067.0 1225.5,2067.0 1232.2,1983.3 606.8,1982.8 609.5,1773.1 -0.0,1775.5 -0.0,0.0 1378.0,-0.0 1378.0,2067.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0562/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[763.0,1773.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.568104,39.272623]}},{"type":"Feature","properties":{"resourceCoords":[1168.0,1773.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.56801,39.271185]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0563/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p563","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0563/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0563","type":"ImageService3","width":1396,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1081.8,2067.0 -0.0,2067.0 -0.0,348.6 828.8,348.1 828.7,238.9 910.8,239.1 1015.4,222.3 1130.6,167.8 1081.8,2067.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0563/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[732.0,1865.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5530464,39.2717323]}},{"type":"Feature","properties":{"resourceCoords":[531.0,231.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5543526,39.2775255]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0564/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p564","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0564/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0564","type":"ImageService3","width":1382,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,189.4 190.1,0.0 1382.0,0.0 1382.0,2067.0 -0.0,2067.0 -0.0,189.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0564/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1278.0,217.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5455912,39.2778735]}},{"type":"Feature","properties":{"resourceCoords":[1278.0,621.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5455442,39.2764023]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0565/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p565","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"25"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0565/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0565","type":"ImageService3","width":1397,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 1087.9,-0.0 1089.1,50.0 1397.0,42.5 1397.0,1914.2 -0.0,1874.5 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0565/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1086.0,161.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5368999,39.2730583]}},{"type":"Feature","properties":{"resourceCoords":[579.0,1148.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5415705,39.2746787]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0566/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p566","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0566/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0566","type":"ImageService3","width":1371,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"318.2,1985.3 -0.0,1985.1 -0.0,-0.0 296.6,0.0 341.6,139.9 379.9,109.5 449.4,327.8 1224.2,83.1 1371.0,253.8 1371.0,2067.0 1313.4,2067.0 1303.3,1743.7 902.9,1755.8 1002.4,2067.0 951.0,2067.0 925.5,1984.8 543.3,1985.4 541.4,1766.8 319.9,1773.5 318.2,1985.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0566/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.53579341949087,39.279471132615285]}},{"type":"Feature","properties":{"resourceCoords":[1371.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.52953653363915,39.279700527758116]}},{"type":"Feature","properties":{"resourceCoords":[1371.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.52909289164249,39.272346659550244]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.53534977749422,39.27211726440741]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0570/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p570","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0570/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0570","type":"ImageService3","width":1393,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1393.0,2067.0 -0.0,2067.0 -0.0,-0.0 1393.0,0.0 1393.0,2067.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0570/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.55813811146781,39.26210075195314]}},{"type":"Feature","properties":{"resourceCoords":[1393.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.55491428761685,39.262220735993516]}},{"type":"Feature","properties":{"resourceCoords":[1393.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.55468417191634,39.25851966636368]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5579079957673,39.25839968232331]}},{"type":"Feature","properties":{"resourceCoords":[1281.0,361.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5551333,39.2615647]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0577/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p577","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0577/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0577","type":"ImageService3","width":1394,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"553.8,1918.0 554.6,1790.3 -0.0,1790.2 -0.0,610.0 1394.0,598.9 1394.0,2067.0 1278.2,2067.0 1278.2,1916.7 553.8,1918.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0577/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[554.0,1697.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5326786,39.2614468]}},{"type":"Feature","properties":{"resourceCoords":[1133.0,1917.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5299589,39.2608111]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0578/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p578","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"7"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0578/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0578","type":"ImageService3","width":1396,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 681.9,0.0 681.0,126.0 1396.0,124.5 1396.0,2067.0 -0.0,2067.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0578/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1256.0,818.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5297198,39.2583237]}},{"type":"Feature","properties":{"resourceCoords":[681.0,126.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.532609,39.260664]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0579/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1936 | sanborn03573_015 p579","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T23:10:01Z","modified":"2026-09-21T23:10:01Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0579/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0579","type":"ImageService3","width":1399,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1399.0,0.0 1399.0,2067.0 -0.0,2067.0 -0.0,-0.0 197.7,0.0 191.8,187.3 197.7,187.4 255.4,189.2 385.1,193.3 429.4,194.6 484.9,196.4 492.5,0.0 696.7,0.0 692.1,202.8 1044.1,213.0 1059.9,270.8 1065.3,289.9 1112.6,291.4 1091.2,215.7 1067.6,133.6 1030.0,0.0 1399.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573193605:03573_05_1936-0579/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1484.0,798.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5287437,39.2704555]}},{"type":"Feature","properties":{"resourceCoords":[1044.0,213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5311439,39.2725644]}}]}}]}