{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03931_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Birmingham, Michigan | 1921 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"8"},{"label":"placed","value":"5"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 3, georef-snap 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p2__1 (tier 1, 42.54740,-83.21798 +/-100m); p2__3 (tier 1, 42.54446,-83.21259 +/-100m); p5__2 (tier 1, 42.54777,-83.21744 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Michigan | 1921 | sanborn03931_005 p1","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T08:55:10Z","modified":"2026-09-22T08:55:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"622.5,1837.7 372.2,1496.2 -0.0,1538.5 0.0,-0.0 1628.0,0.0 1628.0,1848.3 1285.7,1891.7 1183.1,1664.7 708.0,1772.6 622.5,1837.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0001/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21706422172429,42.55423913685765]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.20891575296761,42.55369871302313]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.2097779918653,42.546543253711945]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21792646062197,42.54708367754647]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Michigan | 1921 | sanborn03931_005 p2 [2]","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"44"},{"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":"2026-09-22T08:55:10Z","modified":"2026-09-22T08:55:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1927.0 1579.9,1927.0 1577.7,1122.2 1567.1,1123.2 1529.3,729.3 1352.5,733.5 1352.4,793.2 1130.4,779.0 1130.5,733.3 908.4,733.2 919.4,181.4 905.8,119.0 882.5,117.6 884.0,0.0 433.6,0.0 431.7,350.0 0.0,349.8 -0.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[905.0,1864.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2180799,42.5409601]}},{"type":"Feature","properties":{"resourceCoords":[580.0,358.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2199934,42.546478]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Michigan | 1921 | sanborn03931_005 p3","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-22T08:55:10Z","modified":"2026-09-22T08:55:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"76.0,729.6 47.0,604.5 -0.0,602.2 0.0,-0.0 1076.5,0.0 1628.0,938.9 1628.0,1023.0 1406.8,1024.8 1412.8,1813.0 961.9,1829.6 962.9,1927.0 516.1,1927.0 515.0,1835.0 68.0,1840.6 76.0,729.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[507.0,1036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2172279,42.5466328]}},{"type":"Feature","properties":{"resourceCoords":[515.0,1835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2171595,42.5451666]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Michigan | 1921 | sanborn03931_005 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T08:55:10Z","modified":"2026-09-22T08:55:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0004","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"293.4,120.5 488.3,31.7 1459.2,31.4 1628.0,870.4 1628.0,1239.7 1389.7,1247.6 997.8,1555.3 -0.0,1927.0 -0.0,1145.0 94.0,1151.9 172.5,382.1 390.2,404.4 399.2,322.3 293.4,120.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21554415858557,42.547358914378414]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21147640299495,42.54776514726892]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21082831347138,42.54419283380249]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21489606906201,42.543786600911986]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Michigan | 1921 | sanborn03931_005 p5 [1]","metadata":[{"label":"streets","value":"18"},{"label":"intersections","value":"26"},{"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":"2026-09-22T08:55:10Z","modified":"2026-09-22T08:55:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0005","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1475.3,1927.0 1211.5,1485.9 1628.0,1483.7 1628.0,0.0 1097.2,0.0 1092.4,39.2 748.2,40.1 800.2,213.6 818.5,399.0 700.2,414.9 520.2,589.0 50.0,824.0 56.6,1626.5 -0.0,1626.6 -0.0,1927.0 1475.3,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311921:03931_1921-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1254.0,611.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2088296,42.544737]}},{"type":"Feature","properties":{"resourceCoords":[427.0,1247.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2128813,42.5422739]}}]}}]}