{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03985_018.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Detroit, Michigan | 1915 | 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":"104"},{"label":"placed","value":"76"},{"label":"unplaced","value":"28"},{"label":"fit sources","value":"georef 53, georef-snap 20, snap:0 2, snap:2 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"6 sheet(s) cut into 12 panels"},{"label":"unplaced pages","value":"p0__1 (tier 4, 42.39082,-83.07576 +/-6631m); p10 (tier 1, 42.37964,-83.06544 +/-261m); p11__1 (tier 1, 42.37286,-83.07321 +/-226m); p11__2 (tier 1, 42.38388,-83.06526 +/-197m); p12 (tier 1, 42.28028,-83.23162 +/-223m); p16 (tier 1, 42.37295,-83.04313 +/-270m); p17__1 (tier 1, 42.38565,-83.06540 +/-100m); p18 (tier 2, 42.38070,-83.05663 +/-578m); p19 (tier 1, 42.38688,-83.05321 +/-245m); p20 (tier 1, 42.38725,-83.07556 +/-246m); p25 (tier 1, 42.38065,-83.06369 +/-252m); p31__1 (tier 1, 42.38601,-83.06782 +/-205m); p59 (tier 1, 42.39493,-83.07980 +/-288m); p60 (tier 1, 42.39390,-83.07342 +/-244m); p64 (tier 1, 42.39864,-83.07006 +/-246m); p65__1 (tier 1, 42.40211,-83.08718 +/-190m); p65__2 (tier 1, 42.40194,-83.09049 +/-187m); p75 (tier 1, 42.40503,-83.09481 +/-251m); p76 (tier 1, 42.40406,-83.09040 +/-250m); p78 (tier 1, 42.41187,-83.09952 +/-254m); p79 (tier 4, 42.39082,-83.07576 +/-6631m); p80 (tier 1, 42.41446,-83.09285 +/-255m); p82 (tier 2, 42.38752,-83.05380 +/-100m); p9 (tier 1, 42.37782,-83.06179 +/-253m); p94 (tier 1, 42.42348,-83.09826 +/-514m); p95__1 (tier 1, 42.42012,-83.11308 +/-109m); p97 (tier 1, 42.33542,-83.04259 +/-257m); p98 (tier 1, 42.43525,-83.11458 +/-516m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0000__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p0 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6588.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0000__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0000","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1647.0,1949.0 1647.0,0.0 -0.0,-0.0 0.0,1122.0 125.5,1122.0 138.7,1949.0 1647.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0000__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05875969249351,42.334091413305245]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05507447049062,42.33527666969763]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05317767869846,42.3320519439891]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05686290070135,42.33086668759672]}},{"type":"Feature","properties":{"resourceCoords":[1144.0,1435.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0548034,42.3325404]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p1","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0001","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1323.5,81.6 1345.9,1904.8 1647.0,1899.2 1647.0,1949.0 -0.0,1949.0 18.7,313.1 1151.7,306.1 1149.0,83.6 1323.5,81.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0001/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07566504615971,42.37319826514585]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07202681081411,42.37450281954919]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06995184603429,42.37129965879909]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07359008137989,42.36999510439575]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p13","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0013","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,623.1 130.2,626.0 144.3,0.0 1579.9,0.0 1579.0,200.3 1647.0,201.1 1647.0,395.3 1578.2,396.2 1571.8,1854.3 580.0,1839.8 577.9,1949.0 -0.0,1949.0 -0.0,623.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1567.0,648.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0577587,42.384234]}},{"type":"Feature","properties":{"resourceCoords":[1061.0,1849.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0575124,42.3819117]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p14","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0014","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1517.2,333.1 1647.0,329.7 1647.0,1949.0 -0.0,1949.0 -0.0,435.5 534.6,417.4 533.1,309.1 1516.3,290.1 1517.2,333.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1010.0,302.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0575124,42.3819117]}},{"type":"Feature","properties":{"resourceCoords":[545.0,1126.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0576754,42.3802104]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0015","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,0.0 1647.0,-0.0 1647.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0015/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05307619013152,42.37791602268665]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05135580103232,42.37537738799441]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.0553938391694,42.3738628054182]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.0571142282686,42.376401440110435]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0017__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p17 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6604.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0017__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0017","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"55.4,1617.2 117.3,1618.1 355.2,1623.9 355.5,1949.0 1651.0,1949.0 1642.0,78.0 548.0,74.0 546.5,469.7 51.0,480.0 55.4,1617.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0017__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[548.0,74.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.057376,42.385714]}},{"type":"Feature","properties":{"resourceCoords":[51.0,480.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0580173,42.3846417]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0002","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1647.0,1949.0 -0.0,1935.9 -0.0,81.6 1496.8,75.1 1497.5,1919.8 1647.0,1919.0 1647.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[942.0,868.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.069764,42.373597]}},{"type":"Feature","properties":{"resourceCoords":[942.0,78.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.070612,42.374866]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p21","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0021","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"159.9,1949.0 -0.0,1949.0 -0.0,260.1 1359.5,261.2 1365.7,1807.9 160.2,1804.6 159.9,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[161.0,1351.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.077411,42.3764089]}},{"type":"Feature","properties":{"resourceCoords":[161.0,364.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0784744,42.3779848]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p22","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0022","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1489.8,0.0 1486.0,1809.1 -0.0,1803.3 0.0,-0.0 1489.8,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[930.0,1350.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.072801,42.378113]}},{"type":"Feature","properties":{"resourceCoords":[1488.0,359.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0726744,42.3801466]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p23","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0023","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1534.5,1829.3 100.8,1834.4 94.6,0.0 1531.1,0.0 1534.5,1829.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[96.0,895.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.072129,42.37934]}},{"type":"Feature","properties":{"resourceCoords":[1532.0,392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0695394,42.3813047]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0024","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"65.2,1934.4 62.1,0.0 1081.7,0.0 1071.3,1144.4 1647.0,1151.8 1647.0,1949.0 1616.9,1949.0 1616.4,1761.0 1571.1,1761.0 1570.8,1949.0 65.2,1934.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0024/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07024813625176,42.382099005268806]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06662393675867,42.383448569762486]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06447707622871,42.38025821934389]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.0681012757218,42.37890865485021]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p26","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0026","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"212.8,81.2 1291.5,87.3 1288.0,275.6 1647.0,280.3 1647.0,1949.0 -0.0,1949.0 -0.0,209.3 212.0,212.2 212.8,81.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0026/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06507299271146,42.382061966630445]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06169474302489,42.38332315971677]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05968846592194,42.3803493108767]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06306671560851,42.37908811779038]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p27","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0027","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"160.1,360.7 161.8,116.7 1329.2,114.8 1343.2,1949.0 -0.0,1949.0 8.8,360.7 160.1,360.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0027/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[160.0,1551.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0790194,42.3787944]}},{"type":"Feature","properties":{"resourceCoords":[160.0,1050.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0795652,42.3796049]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p28","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0028","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1704.8 -0.0,115.8 1503.9,126.7 1486.9,1711.3 -0.0,1704.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[949.0,1562.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0743865,42.380522]}},{"type":"Feature","properties":{"resourceCoords":[1496.0,592.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.074273,42.382516]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p29","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0029","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"81.5,1664.7 86.6,125.2 1525.2,123.1 1521.2,1668.2 81.5,1664.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[82.0,1054.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.073767,42.381767]}},{"type":"Feature","properties":{"resourceCoords":[1524.0,1054.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0706293,42.3829274]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p3","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"19"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0003","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"74.2,1937.3 73.4,94.0 1518.4,89.0 1525.6,1831.9 1456.7,1832.4 1457.0,1929.5 74.2,1937.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[844.0,91.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.067738,42.375928]}},{"type":"Feature","properties":{"resourceCoords":[844.0,1383.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.06635,42.373851]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p30","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"25"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0030","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"52.5,427.0 1647.0,65.8 1647.0,1105.8 1584.2,1105.6 1582.3,1220.4 1086.4,1224.3 1083.3,1818.8 58.5,1829.1 52.5,427.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0030/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[876.0,240.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0700314,42.3853884]}},{"type":"Feature","properties":{"resourceCoords":[1084.0,1647.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0680521,42.3832654]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0031__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p31 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"2176.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4412.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0031__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0031","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1624.8,1949.0 1616.0,0.0 1100.5,0.0 1098.8,119.7 582.2,125.2 579.5,1949.0 1624.8,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0031__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[581.0,566.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0680521,42.3832654]}},{"type":"Feature","properties":{"resourceCoords":[581.0,1803.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0667776,42.3813327]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p32","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"2"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0032","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1066.0,1771.3 51.2,1778.8 44.3,0.0 1647.0,0.0 1647.0,1949.0 1064.3,1949.0 1066.0,1771.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0032/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[465.0,539.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.064974,42.384441]}},{"type":"Feature","properties":{"resourceCoords":[465.0,136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.065406,42.385095]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p33","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0033","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1647.0,111.0 1647.0,162.2 1519.2,142.0 1521.4,1846.6 134.5,1847.1 134.5,1949.0 -0.0,1949.0 -0.0,120.5 1647.0,111.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0033/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08448782703923,42.38639113468658]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08092210868053,42.38771524916891]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07881558899903,42.38457659452564]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08238130735774,42.38325248004331]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0034/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p34","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0034/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0034","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"150.8,1949.0 -0.0,1949.0 19.0,323.5 151.9,323.0 152.0,222.0 1522.2,216.6 1541.2,1712.1 152.4,1705.8 150.8,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0034/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[152.0,1632.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0806596,42.3812357]}},{"type":"Feature","properties":{"resourceCoords":[152.0,222.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0822002,42.3835247]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p35","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0035","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1505.2,1332.6 1417.9,1720.0 152.2,1729.3 135.9,227.5 1503.3,233.8 1505.2,1332.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0035/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[878.0,1723.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0759438,42.3828243]}},{"type":"Feature","properties":{"resourceCoords":[1504.0,692.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0757025,42.3849952]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p36","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0036","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"143.9,230.3 1513.1,224.2 1515.5,1725.0 65.3,1734.8 151.5,1342.2 143.9,230.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0036/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[147.0,694.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0757025,42.3849952]}},{"type":"Feature","properties":{"resourceCoords":[1512.0,1170.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.072239,42.385312]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p37","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0037/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0037","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1500.0,1840.0 137.7,1835.1 138.8,144.4 265.1,164.1 265.2,113.3 16.9,116.2 16.5,55.0 138.7,54.7 138.8,0.0 1497.2,0.0 1498.8,98.0 1647.0,96.6 1647.0,137.6 1500.0,137.8 1500.0,1840.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0037/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1500.0,726.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0774232,42.3875417]}},{"type":"Feature","properties":{"resourceCoords":[1500.0,1840.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0762044,42.3857347]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p38","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0038/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0038","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1496.4,1862.7 142.0,1855.0 152.3,144.7 300.0,145.4 300.2,104.2 1517.5,100.2 1496.4,1862.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0038/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1508.0,739.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.074461,42.388644]}},{"type":"Feature","properties":{"resourceCoords":[142.0,1855.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0762044,42.3857347]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0039/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p39","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0039/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0039","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1619.6,1736.4 12.0,1743.6 20.5,0.0 1647.0,0.0 1619.6,1736.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0039/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07571373996852,42.39046708585269]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07208243747026,42.39180917877868]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06994717720684,42.388613002841424]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.0735784797051,42.387270909915436]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0004","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1845.0 68.8,1845.0 67.2,0.0 1647.0,0.0 1647.0,1949.0 -0.0,1949.0 -0.0,1845.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06653972898008,42.37659178239509]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06296816147992,42.37792303493764]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06085061738884,42.374778739607834]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.064422184889,42.373447487065285]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p40","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0040","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"10.6,1949.0 17.4,0.0 1627.1,0.0 1616.2,1463.8 1647.0,1463.7 1647.0,1949.0 1598.4,1949.0 1600.7,1609.4 10.6,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0040/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07381514913949,42.38760324461688]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07019684499015,42.38895564094205]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.0680452915407,42.38577075860208]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07166359569004,42.384418362276904]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p41","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"1"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0041","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"663.0,1949.0 -0.0,1949.0 34.5,57.0 223.9,55.1 245.0,0.0 1647.0,0.0 1647.0,1722.0 663.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0041/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07081121935505,42.3896702888506]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06723205380018,42.39102162156913]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06506948642198,42.38788969975524]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06864865197684,42.386538367036714]}},{"type":"Feature","properties":{"resourceCoords":[34.0,57.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.070673,42.389607]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p42","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0042","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1684.5 -0.0,533.9 -0.0,533.9 -0.0,465.4 295.7,469.2 1647.0,173.9 1647.0,1707.6 -0.0,1684.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0042/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06836907185718,42.38757170944024]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06488245023745,42.388930264162184]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06272109583155,42.3858612955321]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06620771745128,42.384502740810156]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p43","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0043/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0043","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,92.9 1530.0,83.3 1527.4,1857.3 140.3,1860.6 140.9,1949.0 -0.0,1949.0 -0.0,92.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0043/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[142.0,821.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0872849,42.3910803]}},{"type":"Feature","properties":{"resourceCoords":[142.0,322.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0878242,42.3918794]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p44","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0044","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1544.6,70.7 1522.2,1152.0 1647.0,1135.8 1647.0,1264.0 1521.5,1245.2 1506.3,1914.3 1384.0,1911.5 1383.5,1949.0 -0.0,1949.0 0.0,0.0 35.7,0.0 33.2,123.5 171.8,126.9 173.7,39.9 1544.6,70.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0044/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.0865861010439,42.38933091343476]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08302357182073,42.39072845724445]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08080012986626,42.38759275692588]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08436265908944,42.386195213116196]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0045/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p45","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0045/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0045","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"255.8,1232.6 254.1,1103.6 128.7,1121.7 136.7,33.5 1506.7,35.8 1497.0,1125.2 1353.3,1111.9 1353.7,1246.2 1496.2,1239.0 1491.8,1849.7 123.6,1833.8 129.3,1215.4 255.8,1232.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0045/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08349751688392,42.39046953533808]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07993165997587,42.39182327757795]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07777786682463,42.38868470352503]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08134372373269,42.38733096128516]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0046/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p46","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0046/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0046","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1248.3 -0.0,1114.0 143.0,1127.0 155.6,0.0 1535.7,0.0 1502.6,1949.0 136.8,1949.0 141.9,1240.7 -0.0,1248.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0046/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[143.0,1127.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.079013,42.389888]}},{"type":"Feature","properties":{"resourceCoords":[1516.0,529.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.076688,42.391979]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0047/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p47","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0047/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0047","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1761.7 -0.0,127.4 1232.8,117.5 1232.8,184.9 1647.0,187.4 1647.0,1335.0 1595.4,1335.4 1598.8,1753.4 -0.0,1761.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0047/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1232.0,1116.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0736967,42.3924784]}},{"type":"Feature","properties":{"resourceCoords":[416.0,1116.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0754494,42.391839]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0048/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p48","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"14"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0048/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0048","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"124.8,209.1 -0.0,207.8 -0.0,137.1 228.5,135.3 221.0,0.0 1647.0,19.9 1647.0,1455.5 1377.2,1720.2 1071.5,1949.0 748.3,1949.0 747.9,1538.0 508.6,1542.0 508.3,1336.3 120.9,1338.4 124.8,209.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0048/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[122.0,1124.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.072803,42.392802]}},{"type":"Feature","properties":{"resourceCoords":[508.0,1124.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.071962,42.393111]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0049/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p49","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0049/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0049","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,412.1 0.0,-0.0 438.8,0.0 438.0,206.0 677.6,203.2 678.3,614.8 999.5,616.5 1306.7,389.0 1647.0,58.7 1647.0,1701.6 247.4,1709.5 226.6,1764.9 37.8,1767.8 69.5,412.3 -0.0,412.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0049/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1136.0,206.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0699932,42.393002]}},{"type":"Feature","properties":{"resourceCoords":[438.0,206.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.071508,42.392438]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p5","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0005","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,301.8 131.9,301.1 131.5,157.3 1309.9,154.6 1314.8,1722.0 1147.1,1722.8 1147.3,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[133.0,1166.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0758401,42.3740631]}},{"type":"Feature","properties":{"resourceCoords":[133.0,641.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0764026,42.3749074]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p50","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0050","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"327.8,1949.0 322.7,1473.4 254.4,1541.0 246.7,98.9 1543.1,82.5 1430.4,457.7 1230.2,888.1 1647.0,890.5 1647.0,1949.0 327.8,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0050/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1169.0,1764.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.066895,42.393851]}},{"type":"Feature","properties":{"resourceCoords":[747.0,94.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0695929,42.3962038]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0051/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p51","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0051/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0051","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1503.0,1864.0 136.7,1879.0 138.0,0.0 1503.1,0.0 1503.0,1864.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0051/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1503.0,325.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0818686,42.3941364]}},{"type":"Feature","properties":{"resourceCoords":[1503.0,1864.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0801959,42.3916503]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0052/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p52","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0052/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0052","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1526.5,0.0 1521.3,1689.5 1539.3,1689.7 1536.8,1834.0 141.3,1821.8 167.4,0.0 1526.5,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0052/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.0825654790297,42.39450092540028]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07903459679993,42.39586220810973]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.0768686661741,42.392754619662746]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08039954840386,42.39139333695329]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0053/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p53","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0053/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0053","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1168.0,1925.4 1171.7,1863.8 25.6,1809.0 70.1,542.6 131.4,0.0 1647.0,0.0 1647.0,1887.0 1434.8,1876.9 1431.2,1942.3 1233.6,1929.7 1233.6,1929.7 1168.0,1925.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0053/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[793.0,1842.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.075643,42.39374]}},{"type":"Feature","properties":{"resourceCoords":[106.0,93.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0794661,42.3960269]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0054/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p54","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"13"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0054/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0054","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1647.0,0.0 1647.0,1756.0 419.5,1732.6 332.7,0.0 1647.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0054/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[925.0,1820.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.072567,42.39497]}},{"type":"Feature","properties":{"resourceCoords":[755.0,186.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.074801,42.397551]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0055/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p55","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0055/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0055","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,123.3 137.7,125.7 138.3,98.0 1522.3,105.7 1498.1,1835.6 175.7,1828.4 110.3,1875.5 110.5,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0055/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.09243764794624,42.39817326171965]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08888104047993,42.39954627293266]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08669632157617,42.39641622539649]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.09025292904248,42.39504321418348]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0056/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p56","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0056/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0056","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 0.0,-0.0 39.3,0.0 41.3,167.4 150.6,166.1 150.7,92.7 215.4,44.8 1536.9,36.2 1524.4,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0056/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.09052616358937,42.39528027120749]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08694520124064,42.39662247092284]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08480960844372,42.39347084307221]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08839057079246,42.392128643356855]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0057/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p57","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0057/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0057","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"134.8,1837.7 144.0,0.0 1513.2,0.0 1504.8,1846.2 134.8,1837.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0057/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.087500068401,42.39642079795234]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08392607389159,42.39775632210531]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08180106429057,42.394610883513174]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08537505879998,42.3932753593602]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p58","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0058","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"122.0,1865.4 137.3,35.5 1519.8,33.0 1519.9,0.0 1647.0,0.0 1647.0,1582.5 1501.5,1589.0 1476.5,1853.2 122.0,1865.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0058/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08451414057393,42.39753763171397]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08095524281079,42.39887976608766]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07881967641939,42.39574767117687]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08237857418253,42.394405536803184]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p6","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0006","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1727.8 -0.0,164.7 1501.0,161.6 1500.9,1724.2 -0.0,1727.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[948.0,641.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.071785,42.376613]}},{"type":"Feature","properties":{"resourceCoords":[948.0,1726.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.070612,42.374866]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p61","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0061/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0061","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"145.2,102.2 1507.0,95.0 1503.6,1802.5 134.9,1801.5 145.2,102.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0061/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1507.0,1254.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0848115,42.3985307]}},{"type":"Feature","properties":{"resourceCoords":[1507.0,95.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0860847,42.4003905]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0062/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p62","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0062/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0062","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"118.0,102.0 1389.3,93.7 1388.8,169.3 1502.1,170.7 1493.8,1798.9 1647.0,1799.5 1647.0,1949.0 1620.0,1949.0 1620.2,1803.9 1493.5,1804.3 1493.3,1837.3 114.5,1844.0 118.0,102.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0062/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[118.0,1261.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0848115,42.3985307]}},{"type":"Feature","properties":{"resourceCoords":[118.0,102.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0860847,42.4003905]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0063/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p63","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0063/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0063","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"214.2,1949.0 217.6,0.0 1647.0,0.0 1647.0,1949.0 214.2,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0063/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[104.0,1408.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.082069,42.39957]}},{"type":"Feature","properties":{"resourceCoords":[104.0,253.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0833349,42.4014365]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0066/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p66","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0066/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0066","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1515.5,95.2 1514.0,0.0 1647.0,0.0 1647.0,1949.0 1520.2,1949.0 1517.3,1768.5 1421.5,1768.8 1364.2,1949.0 -0.0,1949.0 -0.0,95.9 1515.5,95.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0066/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1512.0,599.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.088535,42.409619]}},{"type":"Feature","properties":{"resourceCoords":[132.0,96.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.092095,42.409306]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0067/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p67","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0067/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0067","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"132.1,1846.0 131.8,1949.0 -0.0,1949.0 -0.0,205.8 129.9,204.2 131.3,110.8 1494.0,110.4 1504.1,1844.7 132.1,1846.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0067/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[132.0,1141.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0950066,42.402542]}},{"type":"Feature","properties":{"resourceCoords":[132.0,1625.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0944767,42.4017613]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0068/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p68","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0068/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0068","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1445.0,1906.9 -0.0,1949.0 14.4,101.2 139.2,101.0 139.3,0.0 1438.8,0.0 1445.0,1906.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0068/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[138.0,1372.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0926607,42.399071]}},{"type":"Feature","properties":{"resourceCoords":[138.0,268.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0939328,42.4009527]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0069/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p69","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0069/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0069","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1518.2,1893.8 256.6,1914.0 240.1,142.3 1521.3,125.9 1518.2,1893.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0069/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1522.0,1368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0866861,42.4013092]}},{"type":"Feature","properties":{"resourceCoords":[1522.0,282.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0879465,42.4031999]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p7","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0007","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1535.8,1731.9 100.7,1730.6 104.7,174.8 1536.6,172.6 1535.8,1731.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[866.0,1731.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.067738,42.375928]}},{"type":"Feature","properties":{"resourceCoords":[104.0,650.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.070582,42.377059]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0070/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p70","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0070/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0070","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1312.5,1879.1 136.0,1902.0 134.8,0.0 1647.0,0.0 1647.0,1640.6 1416.0,1642.8 1416.4,1731.9 1417.8,1949.0 1312.8,1949.0 1312.5,1879.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0070/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[136.0,292.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0879465,42.4031999]}},{"type":"Feature","properties":{"resourceCoords":[136.0,1902.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0860847,42.4003905]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0071/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p71","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0071/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0071","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1392.0,103.8 1647.0,179.6 1510.8,1949.0 128.8,1949.0 129.9,101.3 1392.0,103.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0071/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1522.0,1137.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0890016,42.4047824]}},{"type":"Feature","properties":{"resourceCoords":[1522.0,104.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.090142,42.406439]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0072/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p72","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0072/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0072","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,829.1 -0.0,366.0 266.1,368.2 266.1,177.6 1380.7,180.8 1438.7,0.0 1535.0,0.0 1537.3,181.2 1647.0,181.6 1647.0,1824.8 132.0,1801.8 140.9,829.4 -0.0,829.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0072/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[141.0,1136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0890016,42.4047824]}},{"type":"Feature","properties":{"resourceCoords":[141.0,102.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.090142,42.406439]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0073/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p73","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0073/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0073","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 1647.0,0.0 1647.0,94.3 1528.7,93.2 1509.8,1871.8 144.3,1855.7 142.2,1949.0 -0.0,1949.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0073/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.09851297982702,42.40706906722412]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.09494977838091,42.408431697914224]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.0927812688113,42.40529629268005]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.0963444702574,42.403933661989946]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0074/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p74","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0074/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0074","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1380.8,1886.1 124.9,1884.8 138.7,107.4 256.5,107.7 256.2,13.5 1397.2,0.0 1395.7,110.5 1384.2,110.7 1380.8,1886.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0074/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1516.0,614.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.091538,42.408495]}},{"type":"Feature","properties":{"resourceCoords":[1516.0,111.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.092095,42.409306]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0077/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p77","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0077/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0077","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1514.7,1358.7 -0.0,1370.2 0.0,0.0 1647.0,0.0 1645.9,1262.2 1513.5,1263.1 1514.7,1358.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0077/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.0938265577323,42.41142069376684]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.09024995652179,42.412733312587186]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08816086755775,42.4095863709317]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.09173746876826,42.408273752111356]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p8","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0008","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"75.3,1630.8 77.6,178.8 1089.8,177.6 1089.7,191.8 1600.4,190.8 1601.2,0.0 1647.0,0.0 1647.0,1627.2 75.3,1630.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[578.0,1468.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.065477,42.377314]}},{"type":"Feature","properties":{"resourceCoords":[76.0,1468.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0665702,42.3769088]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0081/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p81","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"5"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0081/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0081","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1647.0,1730.2 538.0,1730.0 537.9,1949.0 34.0,1949.0 34.2,1750.3 -0.0,1750.7 -0.0,361.6 35.8,361.6 36.2,0.0 537.5,0.0 537.8,199.0 1503.5,201.5 1502.3,1407.2 1647.0,1407.3 1647.0,1730.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0081/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[538.0,1004.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.058171,42.386883]}},{"type":"Feature","properties":{"resourceCoords":[538.0,1730.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.057376,42.385714]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0083/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p83","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0083/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0083","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"539.9,1586.2 36.5,1586.0 36.0,1949.0 -0.0,1949.0 0.0,-0.0 189.5,0.0 188.9,104.6 508.2,25.7 544.0,160.6 1647.0,166.4 1647.0,1386.4 1510.1,1386.1 1509.5,1789.0 540.0,1786.0 539.9,1586.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0083/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[540.0,578.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.060372,42.390116]}},{"type":"Feature","properties":{"resourceCoords":[540.0,1786.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.059053,42.388179]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0084/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p84","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0084/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0084","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"146.4,1786.7 -0.0,1786.0 -0.0,165.3 138.0,166.2 137.7,0.0 1647.0,0.0 1647.0,1949.0 146.6,1949.0 146.4,1786.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0084/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05756520012503,42.38986769783881]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05402775825391,42.391195340569986]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05191546372534,42.38808181426028]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05545290559645,42.386754171529105]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0085/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p85","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0085/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0085","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"354.8,1881.7 302.0,1751.2 -0.0,1827.6 0.0,-0.0 217.4,0.0 217.3,77.3 1559.4,76.7 1548.6,1437.5 1577.3,1879.5 354.8,1881.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0085/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[216.0,920.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.062162,42.392226]}},{"type":"Feature","properties":{"resourceCoords":[216.0,494.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.062623,42.392912]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0086/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p86","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0086/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0086","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"26.3,1880.6 148.3,1879.3 152.4,1832.3 120.1,1436.0 133.5,0.0 1647.0,0.0 1647.0,1949.0 26.5,1949.0 26.3,1880.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0086/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.06051466262667,42.39466714087798]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05696028102648,42.395993965148186]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05484918778296,42.392865678629065]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.05840356938316,42.391538854358856]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0087/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p87","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0087/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0087","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,203.1 1647.0,209.1 1647.0,1723.2 1565.3,1723.8 1565.3,1795.5 226.5,1798.0 226.5,1720.8 9.6,1721.2 -0.0,203.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0087/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[226.0,1382.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.063521,42.394256]}},{"type":"Feature","properties":{"resourceCoords":[227.0,1798.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.063071,42.393584]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0089/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p89","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"19"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0089/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0089","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"243.3,608.2 -0.0,610.0 -0.0,0.0 1647.0,0.0 1647.0,1865.2 1449.3,1865.3 1448.7,1915.2 1342.0,1917.1 1342.0,1949.0 1023.2,1949.0 1023.3,1917.5 815.5,1915.7 916.0,1701.5 972.8,1514.6 250.0,1522.2 243.3,608.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0089/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[369.0,666.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0723311,42.3986225]}},{"type":"Feature","properties":{"resourceCoords":[1451.0,1719.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0653507,42.3969527]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0090/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p90","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"24"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0090/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0090","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1647.0,0.0 1647.0,1949.0 51.1,1949.0 51.0,1899.1 157.1,1896.9 157.5,1847.3 354.1,1846.6 348.9,0.0 1647.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0090/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[157.0,907.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.06707,42.399529]}},{"type":"Feature","properties":{"resourceCoords":[939.0,285.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.0649776,42.4027923]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0091/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p91","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0091/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0091","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"81.8,0.0 1324.9,0.0 1647.0,149.8 1647.0,820.2 1549.9,1028.5 1500.0,1006.7 1349.2,1006.4 1349.0,1133.0 1351.0,1777.2 1647.0,1776.9 1647.0,1949.0 -0.0,1949.0 -0.0,50.4 79.0,78.0 81.8,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0091/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.10634572897955,42.41880012636095]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.09918629437006,42.42145571715705]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.09495942488937,42.41515692143566]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.10211885949886,42.41250133063956]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0092/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p92","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0092/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0092","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"67.2,1026.8 217.0,1025.5 266.8,1046.7 361.8,833.2 357.5,169.8 0.0,0.0 1647.0,0.0 1647.0,1949.0 369.1,1949.0 368.1,1791.6 74.0,1795.0 67.2,1026.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0092/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[897.0,628.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.095503,42.420338]}},{"type":"Feature","properties":{"resourceCoords":[74.0,1795.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.096619,42.415235]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0093/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p93","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0093/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0093","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"636.6,80.7 645.0,0.0 1647.0,0.0 1647.0,1512.8 612.6,1874.1 638.5,1949.0 -0.0,1949.0 -0.0,15.1 636.6,80.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0093/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.11007533688426,42.42533917948612]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.10217202967604,42.426087650479424]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.10098059740189,42.41913499103404]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.10888390461011,42.41838652004074]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0095__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p95 [2]","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":"6588.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0095__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0095","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"843.7,1925.0 1520.5,1941.5 1522.6,1862.7 1647.0,1852.8 1647.0,0.0 1388.0,0.0 -0.0,0.0 0.0,1345.4 434.0,1168.6 771.3,1949.0 854.5,1949.0 843.7,1925.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0095__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[107.0,258.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.1144389,42.4313058]}},{"type":"Feature","properties":{"resourceCoords":[844.0,1925.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.1103561,42.4252802]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0096/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1915 | sanborn03985_018 p96","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T18:21:12Z","modified":"2026-09-23T18:21:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0096/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0096","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,-0.0 1647.0,0.0 1647.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114dm:g03985191510:03985_10_1915-0096/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.08313237325738,42.411205440909775]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07596382363417,42.41394846344378]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07159831065063,42.40764089652189]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.07876686027384,42.404897873987885]}}]}}]}