{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03582_009.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Cambridge, Maryland | 1948 | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"43"},{"label":"placed","value":"35"},{"label":"unplaced","value":"8"},{"label":"fit sources","value":"georef 22, georef-snap 12, snap:1 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"8 sheet(s) cut into 16 panels"},{"label":"unplaced pages","value":"p14__2 (tier 1, 38.57903,-76.07945 +/-100m); p1a (tier 1, 38.57973,-76.08173 +/-202m); p1b (tier 1, 38.57778,-76.08000 +/-264m); p26__2 (tier 1, 38.56835,-76.07177 +/-112m); p2__2 (tier 1, 38.57580,-76.07436 +/-100m); p31 (tier 2, 38.56110,-76.06917 +/-100m); p34 (tier 4, 38.56960,-76.07709 +/-1242m); p4__2 (tier 1, 38.57477,-76.07314 +/-104m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"163.7,636.3 581.4,95.9 1590.9,828.5 1387.8,1756.6 46.4,1763.2 77.8,671.2 163.7,636.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08479366961829,38.56488651161977]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08417892118507,38.56781599718375]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07976654281381,38.56724191079389]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08038129124704,38.56431242522991]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1913.0 0.0,45.5 1559.8,40.2 1565.2,1860.5 724.0,1864.9 77.4,1763.7 50.7,1913.0 0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08103551672785,38.563145257417276]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08047136705353,38.56604677369914]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.076101222682,38.565519926380006]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07666537235632,38.56261841009814]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p12","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1039.1 926.7,907.8 781.1,1669.0 59.1,1537.3 154.7,898.7 145.8,69.5 1314.4,77.9 1326.7,312.8 1560.3,308.8 1554.3,0.0 1613.0,0.0 1613.0,1039.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[153.0,537.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.076393,38.564594]}},{"type":"Feature","properties":{"resourceCoords":[278.0,1574.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.076484,38.562667]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"226.4,1758.2 223.0,1913.0 -0.0,1913.0 -0.0,-0.0 1613.0,-0.0 1613.0,907.8 1561.5,907.5 1518.0,798.1 1523.9,1761.4 226.4,1758.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0013/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08104802225861,38.58261610962545]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07820610784653,38.58065380907272]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08116230096651,38.57800039563634]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0840042153786,38.579962696189064]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0014__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p14 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0014__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1230.2,933.3 1217.7,306.4 1613.0,298.5 1613.0,145.5 1613.0,-0.0 364.8,10.8 362.1,920.0 310.6,919.3 267.4,809.3 270.6,1774.2 1313.8,1758.3 1322.5,934.7 1230.2,933.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0014__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[892.0,1772.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.079978,38.577575]}},{"type":"Feature","properties":{"resourceCoords":[892.0,929.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.078681,38.578746]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p15","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"154.1,67.3 980.4,92.5 983.7,0.0 1613.0,0.0 1613.0,1913.0 931.2,1913.0 956.4,1734.0 89.7,1731.7 154.1,67.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[956.0,1734.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.075008,38.5762658]}},{"type":"Feature","properties":{"resourceCoords":[143.0,954.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.077629,38.576034]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p16","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1485.5,1823.3 852.7,1786.3 848.8,1913.0 -0.0,1913.0 -0.0,244.7 204.0,244.2 206.0,90.0 1497.0,90.0 1485.5,1823.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1497.0,90.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.081085,38.578319]}},{"type":"Feature","properties":{"resourceCoords":[206.0,90.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.083366,38.579902]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p17","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1314.1,1862.7 256.4,1797.3 290.5,45.9 1338.8,30.5 1314.1,1862.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[280.0,717.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.08213,38.577404]}},{"type":"Feature","properties":{"resourceCoords":[915.0,44.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.079978,38.577575]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p18","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"216.2,553.4 475.9,556.5 488.9,97.2 1455.3,113.0 1410.6,1773.3 170.3,1762.7 216.2,553.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1060.0,1769.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.07685,38.574565]}},{"type":"Feature","properties":{"resourceCoords":[779.0,557.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.079444,38.575614]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p19","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,573.2 1356.3,577.5 1344.8,1773.5 428.7,1805.9 456.1,122.1 1613.0,114.6 1613.0,573.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[734.0,1031.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.080497,38.57341]}},{"type":"Feature","properties":{"resourceCoords":[449.0,522.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.081848,38.57365]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0020","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1521.8,1190.0 1599.7,1913.0 -0.0,1913.0 11.7,62.6 883.2,63.3 889.9,223.7 1337.4,204.2 1338.1,861.7 1375.9,861.4 1378.1,1194.1 1521.8,1190.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0020/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0847229925874,38.57695563991588]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07948173187312,38.57292013462757]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0855605350919,38.56802598993934]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.09080179580619,38.57206149522765]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p21","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0021","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1281.3,834.9 1537.8,822.5 1519.1,1792.4 -0.0,1764.8 0.0,-0.0 1278.8,0.0 1281.3,834.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1279.0,484.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0802106,38.5724701]}},{"type":"Feature","properties":{"resourceCoords":[1279.0,1793.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0780059,38.5707999]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p22","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1430.2,1687.1 50.7,1639.2 18.8,357.8 788.2,278.7 782.1,0.0 1427.6,0.0 1430.2,1687.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0022/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08531182480785,38.56941471690049]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08268742929589,38.57155568657596]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07946256785333,38.569104987720515]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08208696336528,38.56696401804504]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p23","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"7"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0023","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1430.5,1913.0 -0.0,1913.0 -0.0,818.1 232.7,816.2 156.5,186.6 1430.0,136.0 1430.5,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1430.0,1453.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0846686,38.5656618]}},{"type":"Feature","properties":{"resourceCoords":[1430.0,136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.082466,38.567382]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0024","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1205.0,1578.9 1201.3,1913.0 -0.0,1913.0 -0.0,131.6 562.0,565.6 959.8,54.7 1476.5,487.2 1507.6,573.1 1466.3,887.5 1457.5,1586.6 1205.0,1578.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0024/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08659137339374,38.56623798509776]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08279895931669,38.56586310047892]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08336359464074,38.562321443199856]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0871560087178,38.56269632781869]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p25","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0025","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1404.7,1913.0 -0.0,1913.0 -0.0,1128.7 256.5,1133.7 257.7,423.7 296.1,104.1 1388.9,166.1 1404.7,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0025/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08386773880213,38.56508968501513]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08013837467651,38.56468832945229]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08074287002817,38.5612054991434]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0844722341538,38.56160685470624]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0026__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p26 [1]","metadata":[{"label":"streets","value":"18"},{"label":"intersections","value":"32"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0026__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0026","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"892.1,1913.0 893.0,1090.0 1613.0,1061.9 1613.0,363.4 953.0,263.8 953.7,288.6 46.9,314.1 77.2,821.0 -0.0,824.4 -0.0,1913.0 892.1,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0026__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[548.0,877.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.079071,38.560737]}},{"type":"Feature","properties":{"resourceCoords":[1524.0,1160.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.074745,38.559047]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p27","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0027","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1280.5,953.7 1293.1,1581.2 773.1,1602.5 500.9,1720.6 223.7,1913.0 -0.0,1913.0 -0.0,-0.0 1613.0,0.0 1613.0,946.7 1280.5,953.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0027/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07199594022157,38.573846286472936]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.068560593552,38.57271127904058]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07027026812008,38.569503407057006]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07370561478966,38.57063841448936]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p28","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0028","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"94.4,55.2 718.0,52.8 718.4,381.5 1613.0,395.8 1613.0,1703.5 719.9,1697.0 720.1,1913.0 403.5,1913.0 404.9,1308.1 96.3,1308.2 94.4,55.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[718.0,1308.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0673935,38.5704972]}},{"type":"Feature","properties":{"resourceCoords":[718.0,680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0687581,38.5709219]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p29","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0029","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,938.1 94.0,914.5 0.0,516.5 500.8,0.0 1199.0,0.0 1197.8,90.8 1386.0,369.9 1500.2,643.1 1520.2,1793.7 469.1,1798.9 372.0,1670.9 272.5,1672.0 276.4,1913.0 0.0,1913.0 0.0,938.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0029/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07446241572111,38.568518923327865]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07306414734144,38.57124473018905]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06895837206486,38.56993900540645]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07035664044453,38.56721319854526]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p2 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1280.0,1795.0 1278.7,1913.0 1613.0,1913.0 1613.0,-0.0 1403.1,0.0 1284.3,0.0 883.7,0.0 884.7,391.9 496.1,394.5 495.0,0.0 174.1,-0.0 230.2,598.4 48.6,590.0 152.2,1810.7 1280.0,1795.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1280.0,1189.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0739727,38.57391]}},{"type":"Feature","properties":{"resourceCoords":[1280.0,1795.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0749719,38.5731317]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"350.0,1745.0 242.5,184.8 1363.5,179.0 1360.3,296.2 1613.0,298.4 1613.0,734.1 1350.6,729.6 1321.5,1755.2 350.0,1745.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07695253829164,38.57511923399609]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07426368596069,38.57304584895092]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07738690287638,38.57053508450162]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08007575520733,38.57260846954679]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0030__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p30 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0030__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0030","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"136.7,999.1 0.0,999.7 0.0,1126.6 133.6,1128.8 118.7,1719.3 662.0,1656.2 664.0,1913.0 1226.7,1913.0 1230.2,1586.2 1537.1,1539.7 1545.8,1228.5 1544.5,764.5 1236.0,762.0 1238.6,396.3 1206.0,396.6 1205.1,134.3 193.8,127.9 99.4,0.0 0.0,-0.0 0.0,600.8 88.9,600.3 137.8,956.9 136.7,999.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0030__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1236.0,762.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0679307,38.5694409]}},{"type":"Feature","properties":{"resourceCoords":[662.0,1656.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.066467,38.567871]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0030__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p30 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"4818.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1633.6"},{"label":"split_canvas_h","value":"1586.4"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0030__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0030","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1486.0,0.0 1204.6,-0.0 1206.0,396.6 1531.5,393.9 1486.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0030__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1204.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06949056102661,38.56710871264301]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06914680261166,38.56781086219513]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,396.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06827563558039,38.56754981686566]}},{"type":"Feature","properties":{"resourceCoords":[1204.6,396.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06861939399535,38.56684766731354]}},{"type":"Feature","properties":{"resourceCoords":[1526.1,151.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0688868,38.5675607]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0032__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p32 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3614.8"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4037.2"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0032__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0032","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 1613.0,917.3 468.9,907.6 468.9,1030.8 8.5,1052.8 -0.0,1913.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0032__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,903.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07236302517472,38.56237342646746]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,903.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06879698849947,38.56136862483812]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06960120308726,38.559621724204945]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07316723976251,38.56062652583429]}},{"type":"Feature","properties":{"resourceCoords":[667.0,1281.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.071189,38.561305]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0032__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p32 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3669.2"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0032__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0032","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1165.2,472.6 1613.0,451.4 1613.0,0.0 -0.0,-0.0 -0.0,757.5 742.5,741.5 770.5,910.2 1160.8,913.5 1165.2,472.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0032__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1007.0,220.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.072616,38.56266]}},{"type":"Feature","properties":{"resourceCoords":[1168.0,220.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.07225,38.562557]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p33","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0033","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 -0.0,1315.4 294.8,1316.7 259.0,1047.6 387.1,1044.0 382.6,764.6 219.5,766.2 193.9,614.4 109.0,613.8 107.8,458.4 -0.0,459.9 0.0,-0.0 1613.0,0.0 1613.0,1913.0 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0033/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06573100071884,38.57180602659755]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.05874347897604,38.56955355126136]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06213621139976,38.56302833646096]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06912373314256,38.56528081179715]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p4 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"745.2,1700.8 752.1,1578.7 1569.4,1404.5 1613.0,1609.0 1613.0,1330.8 1484.9,1370.5 1400.3,1181.2 899.5,1188.1 890.5,662.5 1101.0,511.5 872.4,-0.0 415.7,-0.0 441.7,931.6 361.1,933.9 380.4,1375.6 114.1,1380.8 128.0,1736.0 745.2,1700.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[764.0,1368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0748423,38.571588]}},{"type":"Feature","properties":{"resourceCoords":[128.0,1736.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0764668,38.5719678]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p5","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1368.8,1056.1 1611.2,1516.8 1613.0,1579.2 906.8,1913.0 533.8,1141.7 25.4,680.9 158.4,-0.0 762.4,115.6 793.9,-0.0 1613.0,-0.0 1613.0,677.6 1587.4,719.3 1613.0,939.2 1368.8,1056.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[164.0,23.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0764668,38.5719678]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,1575.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0757183,38.5680911]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p6 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1399.6,1765.9 1400.3,912.9 1146.1,282.3 57.1,1758.9 1399.6,1765.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[416.0,1755.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0798655,38.568621]}},{"type":"Feature","properties":{"resourceCoords":[416.0,1276.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.079691,38.5695011]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0006__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p6 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4684.0"},{"label":"split_canvas_h","value":"4334.4"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0006__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"527.4,987.0 1171.0,0.0 0.0,0.0 -0.0,231.5 135.1,401.1 -0.0,649.0 527.4,987.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0006__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[722.0,597.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0747435,38.5679712]}},{"type":"Feature","properties":{"resourceCoords":[490.0,958.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0757183,38.5680911]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0007__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p7 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4460.4"},{"label":"split_canvas_w","value":"2152.8"},{"label":"split_canvas_h","value":"3191.6"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"437.8,1334.1 256.9,1349.9 6.0,1740.7 291.6,1791.5 473.8,1812.0 437.8,1334.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1115.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0816332763028,38.56977199652732]}},{"type":"Feature","properties":{"resourceCoords":[538.2,1115.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07917147818837,38.56932091801473]}},{"type":"Feature","properties":{"resourceCoords":[538.2,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08002669723587,38.566464192979225]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08248849535029,38.566915271491816]}},{"type":"Feature","properties":{"resourceCoords":[6.0,1741.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0822764,38.5675273]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0007__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p7 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0007__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"559.6,167.5 552.8,1642.5 1542.5,1638.0 1552.9,182.8 559.6,167.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0007__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[91.0,1029.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0812574,38.5671823]}},{"type":"Feature","properties":{"resourceCoords":[1542.0,1638.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.078094,38.565677]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1208.5,198.0 1222.8,1654.9 416.8,1661.5 408.6,202.9 1208.5,198.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07842276803224,38.56881051612403]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07471275630472,38.568328984240495]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07543804528059,38.56486440531302]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07914805700811,38.565345937196554]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1948 | sanborn03582_009 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:31:04Z","modified":"2026-09-23T18:31:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 1374.4,1913.0 1366.5,1674.5 173.5,1645.6 188.1,398.6 444.8,812.4 1362.0,250.0 1206.9,0.0 1613.0,0.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821948:03582_1948-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07611066915787,38.56845820713373]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07241811415786,38.56805357494267]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.073027573097,38.564605281967765]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07672012809701,38.56500991415883]}}]}}]}