{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03582_008.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Cambridge, Maryland | 1930 | 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":"33"},{"label":"unplaced","value":"10"},{"label":"fit sources","value":"georef 20, georef-snap 12, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"9 sheet(s) cut into 18 panels"},{"label":"unplaced pages","value":"p1 (tier 1, 38.57965,-76.08378 +/-232m); p13__2 (tier 2, 38.57947,-76.08213 +/-187m); p14__2 (tier 1, 38.57868,-76.07921 +/-100m); p27 (tier 1, 38.57091,-76.07050 +/-126m); p2__2 (tier 1, 38.57648,-76.07493 +/-100m); p30__2 (tier 1, 38.56724,-76.06824 +/-100m); p33__1 (tier 2, 38.56035,-76.06900 +/-100m); p33__2 (tier 1, 38.56043,-76.06485 +/-100m); p34 (tier 4, 38.56944,-76.07751 +/-1246m); p4__2 (tier 1, 38.57278,-76.07277 +/-103m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"165.6,647.9 587.7,107.0 1598.4,847.5 1390.0,1778.9 42.6,1779.4 79.2,682.5 165.6,647.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0848134036494,38.56488148645522]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08421842047426,38.56779984426754]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07982280199926,38.567244215863866]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0804177851744,38.56432585805155]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"41.1,1776.3 276.6,735.1 352.8,39.8 1540.3,51.6 1536.9,1881.0 691.5,1881.3 41.1,1776.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08103434574916,38.56319469165783]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08049082255152,38.56608380132246]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07613936087986,38.56557621705305]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0766828840775,38.56268710738841]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p12","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"914.8,980.2 811.1,1686.8 62.3,1564.8 146.4,921.5 121.8,88.8 1572.6,72.3 1571.2,0.0 1613.0,0.0 1613.0,1082.7 914.8,980.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[283.0,1598.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.076484,38.562667]}},{"type":"Feature","properties":{"resourceCoords":[996.0,1716.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.074882,38.562225]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0013__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 | 1930 | sanborn03582_008 p13 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"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":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0013__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1506.1,1777.6 1495.9,806.2 1540.2,916.6 1613.0,917.2 1613.0,-0.0 726.1,0.0 724.9,617.9 0.0,620.3 -0.0,1771.9 1506.1,1777.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0013__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[826.0,1771.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.082267,38.579147]}},{"type":"Feature","properties":{"resourceCoords":[199.0,1771.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.083366,38.579902]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0014__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 | 1930 | sanborn03582_008 p14 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"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":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0014__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"291.0,915.0 250.0,800.7 223.4,1792.2 1295.7,1808.0 1330.1,962.1 1220.7,957.1 1225.2,288.1 1613.0,290.6 1613.0,-0.0 399.6,-0.0 365.3,918.4 291.0,915.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0014__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[250.0,801.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0796068,38.5796623]}},{"type":"Feature","properties":{"resourceCoords":[888.0,942.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.078681,38.578746]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p15","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"125.2,78.9 953.8,107.1 957.9,0.0 1613.0,0.0 1613.0,1913.0 900.8,1913.0 923.9,1753.0 54.8,1747.7 125.2,78.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[924.0,1753.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.075008,38.5762658]}},{"type":"Feature","properties":{"resourceCoords":[111.0,968.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.077629,38.576034]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p16","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1484.6,1854.7 845.1,1814.0 840.8,1913.0 -0.0,1913.0 1.3,96.9 1505.0,102.6 1484.6,1854.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[826.0,96.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.082267,38.579147]}},{"type":"Feature","properties":{"resourceCoords":[200.0,96.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.083366,38.579902]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p17","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"226.7,1815.6 257.1,57.3 1309.4,39.5 1288.6,1878.9 226.7,1815.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[248.0,731.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.08213,38.577404]}},{"type":"Feature","properties":{"resourceCoords":[884.0,54.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.079978,38.577575]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p18","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"195.3,575.1 481.2,573.8 489.9,110.7 1433.6,111.6 1426.3,1786.5 176.6,1795.3 195.3,575.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0018/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08160657787367,38.57526121830214]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07912591614719,38.57746747749453]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07580243623771,38.575151191262286]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07828309796419,38.572944932069895]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,581.8 1329.7,588.5 1333.8,1798.2 408.2,1836.7 413.6,133.3 1613.0,118.2 1613.0,581.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0019/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08342691049631,38.57376214353355]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08087202906565,38.57595019200415]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0775760515519,38.57356455340268]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08013093298257,38.57137650493208]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0020","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1512.9,1191.1 1588.0,1913.0 -0.0,1913.0 -0.0,122.5 24.3,121.2 24.2,71.0 885.8,74.8 891.8,233.4 1333.5,215.8 1330.4,842.2 1381.5,842.1 1380.5,1194.4 1512.9,1191.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0020/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08473632281685,38.577011362103626]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07941543295905,38.572945037971145]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08554066260893,38.56797654028135]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.09086155246673,38.57204286441383]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p21","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0021","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1256.2,849.4 1516.7,836.1 1500.0,1821.3 -0.0,1797.9 -0.0,-0.0 1251.6,0.0 1256.2,849.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[635.0,1810.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0790279,38.5700116]}},{"type":"Feature","properties":{"resourceCoords":[1253.0,493.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0802106,38.5724701]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p22","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1471.3,1680.0 37.0,1638.5 6.6,346.1 783.0,261.9 777.6,0.0 1475.0,0.0 1471.3,1680.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1087.0,1670.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0807097,38.568716]}},{"type":"Feature","properties":{"resourceCoords":[783.0,262.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0835595,38.5701039]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p23","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0023","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 -0.0,828.2 202.2,827.9 134.3,174.5 1428.0,136.1 1398.3,1913.0 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0023/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08461880122732,38.569380789419384]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08193815871883,38.56732425450444]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08503574659268,38.56482095647717]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08771638910117,38.56687749139211]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0024","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1468.0,896.4 1451.2,1913.0 -0.0,1913.0 -0.0,103.6 579.0,547.2 663.5,444.9 964.9,57.6 1480.7,494.8 1511.4,581.2 1468.0,896.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0024/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0865973984864,38.5662325843697]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08281503408689,38.56587738320889]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08335002317592,38.56234511214124]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08713238757544,38.562700313302045]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p25","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0025","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1379.4,1913.0 -0.0,1913.0 -0.0,1479.1 221.8,1474.5 221.7,1410.7 218.8,1152.8 214.6,994.2 217.8,436.8 255.5,114.2 1357.9,173.2 1379.4,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0025/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08376462653733,38.56509709697941]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0800689270762,38.56468980011203]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08068237090444,38.561238409445885]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08437807036557,38.561645706313264]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0026__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 | 1930 | sanborn03582_008 p26 [1]","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"28"},{"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":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0026__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0026","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,371.1 748.2,229.9 372.2,147.4 30.0,117.1 63.3,809.0 -0.0,810.9 0.0,870.0 -0.0,1913.0 890.3,1913.0 888.3,1097.5 1613.0,1091.3 1613.0,371.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0026__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[886.0,253.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.07698,38.562797]}},{"type":"Feature","properties":{"resourceCoords":[543.0,1175.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.079292,38.55968]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0026__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 | 1930 | sanborn03582_008 p26 [2]","metadata":[{"label":"streets","value":"1"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"3553.2"},{"label":"split_canvas_y","value":"4365.2"},{"label":"split_canvas_w","value":"2898.8"},{"label":"split_canvas_h","value":"3286.8"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0026__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0026","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 1613.0,1184.0 1316.1,1156.8 1321.9,1093.8 1319.2,1093.8 1211.6,1120.0 952.0,1097.0 888.3,1097.5 890.3,1913.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0026__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[888.3,1091.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07155857160345,38.568236463342565]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1091.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06993686433748,38.56786173337927]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07047993562382,38.56642326054714]}},{"type":"Feature","properties":{"resourceCoords":[888.3,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07210164288979,38.56679799051044]}},{"type":"Feature","properties":{"resourceCoords":[1354.1,1331.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0706749,38.5675753]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p28","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0028","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"89.5,62.3 91.1,62.3 91.1,0.0 1613.0,0.0 1613.0,1913.0 402.9,1913.0 402.4,1325.1 91.4,1325.2 89.5,62.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[718.0,1325.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0673935,38.5704972]}},{"type":"Feature","properties":{"resourceCoords":[718.0,692.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0687581,38.5709219]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p29","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0029","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"401.1,1797.9 303.1,1564.1 299.1,1235.3 0.0,1264.4 0.0,1009.1 73.8,991.9 0.0,679.2 -0.0,-0.0 1117.8,0.0 1613.0,212.4 1613.0,1110.6 1495.0,1111.2 1500.8,1808.8 401.1,1797.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0029/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07445248728651,38.56857655006255]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07305559628318,38.57128540692745]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06897534852442,38.56998096950884]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07037223952774,38.56727211264394]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0002__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 | 1930 | sanborn03582_008 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":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1276.0,1815.0 1278.5,971.2 1613.0,971.3 1613.0,525.0 1613.0,-0.0 1403.2,0.0 1284.5,0.0 877.1,0.0 881.8,401.1 490.3,401.1 489.8,0.0 142.9,-0.0 202.6,613.1 40.0,605.6 144.0,1830.8 1276.0,1815.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1276.0,1207.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0739727,38.57391]}},{"type":"Feature","properties":{"resourceCoords":[1276.0,1815.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0749719,38.5731317]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p3","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"6"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"325.1,1767.3 189.6,192.0 1322.0,174.8 1306.8,1767.7 325.1,1767.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[593.0,190.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0761877,38.5740491]}},{"type":"Feature","properties":{"resourceCoords":[258.0,1091.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.078216,38.573329]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0030__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 | 1930 | sanborn03582_008 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":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0030__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0030","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 0.0,1913.0 420.0,1913.0 606.0,1913.0 1613.0,1913.0 1613.0,1373.2 1546.1,1373.1 1545.7,780.0 1232.0,780.0 1231.3,142.0 167.0,144.0 110.3,113.9 64.9,0.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0030__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[657.0,780.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0684193,38.5684801]}},{"type":"Feature","properties":{"resourceCoords":[1232.0,780.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0679307,38.5694409]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p31","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0031","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"383.3,1425.3 -0.0,1276.9 -0.0,-0.0 1613.0,0.0 1613.0,1913.0 464.9,1913.0 531.8,1746.3 299.0,1638.5 383.3,1425.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0031/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07067986325112,38.564235956539605]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06647587247572,38.56434885181055]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06630583906023,38.56042272401998]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07050982983563,38.56030982874904]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0032__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 | 1930 | sanborn03582_008 p32 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3694.4"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3957.6"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0032__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0032","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1326.3,1303.0 1325.0,1045.2 865.0,1049.0 816.5,927.5 419.1,925.6 422.1,1048.8 8.1,1069.5 -0.0,1913.0 1613.0,1913.0 1613.0,1319.0 1326.3,1303.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0032__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,923.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07236535993556,38.562365693107935]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,923.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0688258263236,38.561368359242834]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.06960825724053,38.55966877671233]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07314779085249,38.56066611057743]}},{"type":"Feature","properties":{"resourceCoords":[672.0,1299.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.071189,38.561305]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0032__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 | 1930 | sanborn03582_008 p32 [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":"6452.0"},{"label":"split_canvas_h","value":"3725.2"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0032__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0032","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"748.4,927.2 1180.7,929.2 1197.0,455.9 1613.0,445.4 1613.0,0.0 1378.1,0.0 1253.1,0.0 -0.0,-0.0 -0.0,722.4 717.5,724.6 748.4,927.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0032__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[189.0,724.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.074882,38.562225]}},{"type":"Feature","properties":{"resourceCoords":[1175.0,724.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.072708,38.56166]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0004__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 | 1930 | sanborn03582_008 p4 [1]","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":"7652.0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"997.4,1809.0 1086.8,1913.0 1352.8,1913.0 1613.0,1453.5 1613.0,1196.9 891.7,1206.7 890.3,677.1 1162.7,484.3 1613.0,478.4 1613.0,-0.0 118.5,-0.0 120.0,1746.0 866.6,1741.9 997.4,1809.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[120.0,234.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0739727,38.57391]}},{"type":"Feature","properties":{"resourceCoords":[120.0,1746.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0764668,38.5719678]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1592.2,1575.9 868.4,1913.0 496.4,1150.8 -0.0,701.7 122.2,32.2 724.4,119.8 891.0,175.8 1000.4,283.0 1121.8,573.0 1613.0,28.9 1613.0,1354.0 1518.8,1400.2 1592.2,1575.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0766576953783,38.57214517683605]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07356904777072,38.57044510892557]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07612981616901,38.567560907847714]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0792184637766,38.5692609757582]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1098.7,283.6 1376.1,896.6 1414.3,1762.0 43.1,1819.4 1098.7,283.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07996889296213,38.571994683160426]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07629473930635,38.57140899520561]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07717694793969,38.56797805215699]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08085110159547,38.568563740111806]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0007__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 | 1930 | sanborn03582_008 p7 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4527.2"},{"label":"split_canvas_w","value":"2008.8"},{"label":"split_canvas_h","value":"3124.8"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"404.6,1355.3 222.1,1366.2 0.0,1690.7 0.0,1762.3 427.5,1837.2 404.6,1355.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1131.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08150427458038,38.56971739710739]}},{"type":"Feature","properties":{"resourceCoords":[502.2,1131.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.0792103063515,38.569349410871006]}},{"type":"Feature","properties":{"resourceCoords":[502.2,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07994302833345,38.566553741392866]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.08223699656233,38.56692172762925]}},{"type":"Feature","properties":{"resourceCoords":[-42.0,1752.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0822764,38.5675273]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0007__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 | 1930 | sanborn03582_008 p7 [2]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"},{"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":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0007__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"524.2,179.7 518.5,1660.2 1512.0,1655.0 1521.3,194.3 524.2,179.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0007__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1201.0,1655.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0788147,38.5657623]}},{"type":"Feature","properties":{"resourceCoords":[1512.0,1655.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.078094,38.565677]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1224.1,1678.5 409.4,1686.3 398.9,198.1 1207.7,205.7 1224.1,1678.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07838749520918,38.56881918509518]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07471843139513,38.56833883161149]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07544194571159,38.56491249295425]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.07911100952565,38.56539284643794]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, Maryland | 1930 | sanborn03582_008 p9","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-23T17:00:56Z","modified":"2026-09-23T17:00:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"148.5,1661.0 156.1,0.0 1613.0,0.0 1613.0,1674.2 148.5,1661.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd384m:g3844m:g3844cm:g3844cm_g035821930:03582_1930-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[145.0,1165.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0760677,38.5663414]}},{"type":"Feature","properties":{"resourceCoords":[145.0,192.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.0757183,38.5680911]}}]}}]}