{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03992_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"East Detroit, Michigan | 1950 | 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":"25"},{"label":"placed","value":"21"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef-snap 14, georef 7"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p0 (tier 4, 42.46348,-82.95654 +/-1590m); p1 (tier 2, 42.47652,-82.94642 +/-100m); p10__2 (tier 1, 42.46681,-82.95055 +/-140m); p3 (tier 2, 42.46386,-82.96091 +/-140m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0010__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p10 [1]","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"17"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0010__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0010","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1483.7,1746.7 1497.0,416.0 1368.4,405.6 1344.8,376.8 974.1,176.6 153.8,1738.4 1483.7,1746.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0010__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1352.0,1094.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.9518268,42.4671749]}},{"type":"Feature","properties":{"resourceCoords":[1497.0,416.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.9512066,42.4697277]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0011","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1486.0,1750.8 205.9,1762.4 207.1,410.8 866.4,408.5 866.5,0.0 1481.9,0.0 1486.0,1750.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95228378943557,42.471221108246326]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.9442156521169,42.47137040503598]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94397776588598,42.46427611282078]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95204590320465,42.464126816031126]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0012","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,1736.0 117.1,1756.8 119.8,18.6 -0.0,18.1 0.0,0.0 1628.0,0.0 1628.0,1736.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94554033750786,42.471412993107286]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.93741514259585,42.471586698284554]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.9371383638523,42.464442254138326]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94526355876431,42.46426854896106]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0013__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p13 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4460.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"3248.0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0013__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0013","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1500.8,1425.8 1077.5,1426.2 1077.0,1193.5 856.0,1184.3 858.3,1346.0 609.5,1286.4 141.0,1298.5 142.3,1711.1 -0.0,1709.4 -0.0,1927.0 352.0,1927.0 567.0,1927.0 1287.8,1927.0 1292.0,1727.7 1400.3,1729.0 1402.1,1613.6 1500.8,1425.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0013__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1077.0,1193.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.9679856,42.4564278]}},{"type":"Feature","properties":{"resourceCoords":[141.0,1299.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.9687086,42.4598719]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0013__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p13 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"4460.4"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0013__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0013","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1316.8,931.4 1459.0,933.5 1462.5,114.7 163.2,139.6 210.7,1111.1 1310.8,1115.1 1316.2,1115.1 1316.8,931.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0013__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[842.0,924.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.9708729,42.4620888]}},{"type":"Feature","properties":{"resourceCoords":[1463.0,320.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.9676921,42.4598909]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0014","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"421.5,1438.3 222.6,1433.2 205.8,125.8 1628.0,224.4 1628.0,891.9 1224.6,1615.7 1020.4,1521.0 912.4,1710.3 417.4,1697.8 421.5,1438.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0014/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96813186513593,42.465154988764574]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96007320724556,42.465465270970846]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.9595788573612,42.45837864059487]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96763751525157,42.4580683583886]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0015__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p15 [1]","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"28"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0015__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0015","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"197.4,1403.9 107.2,1402.5 -0.0,1603.4 -0.0,1643.8 69.0,1644.3 -0.0,1773.0 -0.0,1927.0 1628.0,1927.0 1628.0,1287.9 1528.7,1287.0 1536.6,299.8 1416.8,295.2 900.6,95.2 791.5,299.4 780.5,293.5 781.6,148.4 720.9,261.4 720.5,261.2 484.0,703.4 484.4,872.1 197.4,1403.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0015__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[657.0,1803.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.9602075,42.4559529]}},{"type":"Feature","properties":{"resourceCoords":[1327.0,1319.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.9569449,42.4578369]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0015__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p15 [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":"2046.0"},{"label":"split_canvas_h","value":"1049.6"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0015__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0015","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 0.0,260.7 510.4,262.4 511.5,0.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0015__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":[-82.94361014936483,42.4583025425858]}},{"type":"Feature","properties":{"resourceCoords":[511.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94104795010385,42.458341769606]}},{"type":"Feature","properties":{"resourceCoords":[511.5,262.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.941020674223,42.45737687007173]}},{"type":"Feature","properties":{"resourceCoords":[0.0,262.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94358287348398,42.457337643051524]}},{"type":"Feature","properties":{"resourceCoords":[445.6,203.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.9413571,42.4575891]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0016","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"193.1,1927.0 195.6,131.6 1445.4,126.4 1442.9,1927.0 193.1,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0016/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95719483657346,42.46508159860569]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.9491011638928,42.46526656718247]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94880646780251,42.45814912667117]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95690014048317,42.45796415809439]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0017","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"179.9,1484.1 198.9,121.3 1475.2,130.6 1456.7,1499.9 1628.0,1501.0 1628.0,1927.0 173.6,1927.0 179.9,1484.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95100139161738,42.465193798821595]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94293404046444,42.4654541404336]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94251925757996,42.45835986000582]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.9505866087329,42.458099518393816]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p18","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0018","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"209.4,1511.6 190.6,1511.7 196.1,147.1 1502.5,136.8 1503.2,0.0 1628.0,0.0 1628.0,1927.0 365.3,1927.0 361.3,1511.1 209.4,1511.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0018/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94466327532218,42.46546798749256]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.93656427541788,42.465671949572595]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.93623931643835,42.458549868515846]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94433831634265,42.45834590643581]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0019","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"570.7,1712.6 457.1,1707.0 -0.0,1466.2 -0.0,1040.3 236.3,1040.2 245.9,818.0 81.7,820.0 142.5,569.8 130.6,98.4 743.5,104.6 741.7,364.4 1237.4,372.6 1343.9,182.1 1549.2,275.1 1628.0,131.8 1628.0,301.3 1581.1,387.7 1335.7,834.4 1244.3,832.7 1135.1,1034.1 1135.0,1074.7 1205.0,1075.5 1134.7,1204.5 1134.3,1359.1 1582.5,1360.5 1578.3,1665.2 1025.2,1654.0 917.4,1601.0 740.1,1927.0 647.1,1927.0 802.4,1643.9 585.4,1528.5 570.7,1712.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0019/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96937554584147,42.460212832315136]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96132435068195,42.46046988570433]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96091483912242,42.453389251622944]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96896603428195,42.45313219823375]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"133.9,1927.0 126.0,1772.5 -0.0,1769.7 -0.0,777.9 159.8,220.7 1434.5,581.0 1362.7,727.6 1539.8,728.2 1049.8,1731.6 867.8,1737.4 774.8,1927.0 133.9,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96032963349546,42.46788930449878]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95631206204368,42.467891331499416]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.9563088323476,42.46435860133955]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96032640379939,42.464356574338915]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p20","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0020","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"434.7,805.3 437.7,692.3 252.8,681.9 363.4,463.8 650.9,611.5 648.7,519.3 317.8,350.6 355.2,276.1 1628.0,261.2 1628.0,1927.0 -0.0,1927.0 -0.0,1573.7 109.2,1572.7 112.3,1446.6 434.7,805.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[841.0,169.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.9635417,42.4525696]}},{"type":"Feature","properties":{"resourceCoords":[1125.0,1557.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.9704292,42.4514267]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p21","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"22"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0021","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,566.5 580.9,584.8 581.8,280.4 1628.0,271.6 1628.0,1927.0 -0.0,1927.0 -0.0,566.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[585.0,1058.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.9611212,42.452603]}},{"type":"Feature","properties":{"resourceCoords":[585.0,1525.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.9610473,42.4508848]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0004","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1689.0 -0.0,1398.7 30.5,1341.6 7.9,164.8 643.6,185.1 741.8,0.0 923.1,0.0 894.0,54.0 1537.3,73.2 1526.1,1690.8 1284.2,1683.3 239.5,1290.9 22.4,1700.7 -0.0,1689.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96002896134272,42.46466053800853]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95598287770139,42.46475860659466]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95582662913073,42.461200627881496]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95987271277205,42.46110255929537]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0005","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1367.8,1661.2 563.2,1592.8 393.8,1927.0 303.8,1927.0 667.9,1208.0 -0.0,1250.6 -0.0,0.0 1628.0,0.0 1628.0,1927.0 1371.1,1927.0 1367.8,1661.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95418958007559,42.48046903039773]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94605726988092,42.48056032606041]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94591178001264,42.473410656691414]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.9540440902073,42.47331936102873]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0006","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"655.0,1725.8 281.1,1528.8 506.5,1096.7 -0.0,1092.0 -0.0,0.0 283.6,0.0 282.1,124.7 942.3,90.9 573.8,796.5 662.6,797.6 834.2,469.7 1628.0,547.1 1628.0,1363.5 1455.5,1363.0 1454.4,1763.5 721.2,1763.2 678.8,1754.4 655.0,1725.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95553846533541,42.476267915160285]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94730838637652,42.47643692527415]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.94703906807143,42.469200810416126]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95526914703032,42.46903180030226]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0007","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1249.8,0.0 1214.3,852.9 1445.8,924.6 1443.9,1706.2 1093.5,1697.4 116.9,1760.1 108.7,1927.0 -0.0,1927.0 -0.0,-0.0 1249.8,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.97279494151091,42.47092142220254]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96465234937817,42.47109581204015]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96437448169921,42.46393601932154]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.97251707383195,42.463761629483926]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0008","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1268.1,1730.5 265.6,1718.5 234.9,935.4 -0.0,873.1 0.0,-0.0 1079.2,0.0 1080.4,118.7 1306.3,115.4 1558.0,232.9 1492.0,366.4 1258.3,1252.2 1268.1,1730.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.9665429710494,42.471118351394225]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95842108907563,42.471041408649995]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95854368751702,42.46389983326232]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.9666655694908,42.46397677600655]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"East Detroit, Michigan | 1950 | sanborn03992_003 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:02Z","modified":"2026-09-23T07:20:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0009","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"890.1,1853.4 250.9,1674.9 414.3,1071.8 482.6,937.4 228.9,815.7 -0.0,816.6 -0.0,-0.0 1159.5,0.0 1171.4,392.9 1628.0,383.1 1628.0,513.1 943.2,1927.0 854.4,1927.0 890.1,1853.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114em:g039921950:03992_1950-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96115093932328,42.47361548071693]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.95313194027406,42.47360103566079]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.9531549575749,42.46655021561886]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-82.96117395662411,42.466564660675]}}]}}]}