{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03931_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Birmingham, Michigan | 1926 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"15"},{"label":"placed","value":"12"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 7, georef-snap 5"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"4 sheet(s) cut into 12 panels"},{"label":"unplaced pages","value":"p1 (tier 1, 42.54668,-83.20895 +/-404m); p4__3 (tier 1, 42.55030,-83.21974 +/-100m); p5__3 (tier 1, 42.53762,-83.23220 +/-116m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Michigan | 1926 | sanborn03931_006 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:37:42Z","modified":"2026-10-19T01:37:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"54.3,424.4 143.1,390.6 151.1,135.1 253.6,131.0 264.4,70.5 1254.8,348.5 1296.4,432.6 1353.9,529.9 1500.5,752.6 1627.0,951.9 1627.0,1014.9 1627.0,1028.3 1406.3,1028.8 1404.5,1391.9 1406.7,1812.5 1363.2,1822.6 957.8,1825.8 957.6,1798.9 513.3,1816.3 513.0,1828.0 368.1,1828.6 69.1,1564.7 68.0,1189.5 69.9,973.5 84.0,725.8 57.7,672.6 50.1,465.1 54.3,424.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[510.0,1038.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.21722946966436,42.5466244139749]}},{"type":"Feature","properties":{"resourceCoords":[960.0,1038.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.21610212349837,42.546650587682244]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0003__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 | 1926 | sanborn03931_006 p3 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"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":"2026-10-19T01:37:42Z","modified":"2026-10-19T01:37:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"97.4,1192.7 53.2,1595.6 21.2,1910.2 20.2,1926.0 131.4,1926.0 152.8,1926.0 357.1,1847.2 482.1,1803.3 742.9,1701.2 856.6,1662.1 1003.8,1602.3 1049.8,1569.7 1235.2,1403.4 1367.2,1305.0 1449.0,1281.4 1544.4,550.9 1571.1,553.9 1567.6,535.3 1209.6,61.9 1200.0,90.9 339.0,129.4 301.4,149.9 406.2,361.0 398.2,436.9 179.0,414.3 139.2,774.8 97.4,1192.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[213.0,424.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2148968500974,42.54668437350886]}},{"type":"Feature","properties":{"resourceCoords":[1025.0,1602.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2124755112028,42.54473059657244]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0003__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 | 1926 | sanborn03931_006 p3 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.77"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4957.2"},{"label":"split_canvas_y","value":"6145.2"},{"label":"split_canvas_w","value":"1554.8"},{"label":"split_canvas_h","value":"1562.8"}],"created":"2026-10-19T01:37:42Z","modified":"2026-10-19T01:37:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1289.4,1915.2 1599.6,1916.4 1626.5,1730.5 1609.1,1581.3 1398.9,1565.0 1392.1,1581.3 1373.9,1586.8 1367.3,1574.1 1290.3,1586.0 1251.3,1878.3 1289.4,1915.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1239.3,1536.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22276076617149,42.55124830757465]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1536.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22085754181425,42.55150706204529]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22050419370875,42.55009897535256]}},{"type":"Feature","properties":{"resourceCoords":[1239.3,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22240741806598,42.549840220881926]}},{"type":"Feature","properties":{"resourceCoords":[1548.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2209616,42.5503012]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0004__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 | 1926 | sanborn03931_006 p4 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.47"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1664.4"},{"label":"split_canvas_h","value":"1358.0"}],"created":"2026-10-19T01:37:42Z","modified":"2026-10-19T01:37:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0004","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"388.4,306.2 408.4,68.5 415.1,64.7 415.1,64.0 405.7,28.5 288.5,48.1 126.0,15.9 39.1,98.4 18.2,63.5 10.2,267.4 16.3,297.1 110.1,305.1 126.0,338.3 388.4,306.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22460751402963,42.54636385499005]}},{"type":"Feature","properties":{"resourceCoords":[416.1,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22274226736806,42.54570355968868]}},{"type":"Feature","properties":{"resourceCoords":[416.1,339.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.2234754489427,42.54458145310949]}},{"type":"Feature","properties":{"resourceCoords":[0.0,339.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22534069560426,42.54524174841085]}},{"type":"Feature","properties":{"resourceCoords":[239.1,140.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2238404,42.5455205]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0004__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 | 1926 | sanborn03931_006 p4 [2]","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"49"},{"label":"confidence","value":"0.91"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"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":"2026-10-19T01:37:42Z","modified":"2026-10-19T01:37:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0004","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"673.6,23.0 481.6,66.9 416.6,366.1 106.0,393.7 76.5,560.2 1.0,557.0 1.0,573.0 60.8,578.2 29.6,696.1 71.7,932.8 32.8,1143.5 22.4,1560.5 56.0,1819.2 388.4,1893.1 1593.2,1874.0 1590.0,1926.0 1594.9,1926.0 1591.6,1649.9 1591.4,1416.6 1592.5,1129.5 1595.0,1109.4 1594.1,1076.2 1595.3,914.8 1598.6,707.9 1576.3,712.8 1369.7,712.0 1369.7,698.3 1143.1,704.6 1142.9,710.5 1069.0,710.0 918.1,573.8 919.8,382.5 922.0,272.5 930.6,146.2 917.5,119.0 911.2,44.4 673.6,23.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[694.0,1863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2191217,42.5409261]}},{"type":"Feature","properties":{"resourceCoords":[1130.0,1863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2169801,42.5409938]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0005__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 | 1926 | sanborn03931_006 p5 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.67"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1244.0"},{"label":"split_canvas_h","value":"2047.2"}],"created":"2026-10-19T01:37:42Z","modified":"2026-10-19T01:37:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0005","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"20.5,490.5 293.6,475.9 247.9,422.4 278.4,397.9 245.6,389.1 280.3,163.8 266.0,172.1 256.8,163.5 235.7,90.2 255.0,68.9 201.5,26.2 41.8,60.2 13.5,29.6 20.5,490.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.2145127865205,42.53418463414118]}},{"type":"Feature","properties":{"resourceCoords":[311.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21296673283568,42.53423105616099]}},{"type":"Feature","properties":{"resourceCoords":[311.0,511.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.2128629031944,42.53235758767076]}},{"type":"Feature","properties":{"resourceCoords":[0.0,511.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21440895687923,42.532311165650945]}},{"type":"Feature","properties":{"resourceCoords":[29.0,472.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2142727,42.5324582]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0005__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 | 1926 | sanborn03931_006 p5 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"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":"2026-10-19T01:37:42Z","modified":"2026-10-19T01:37:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0005__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0005","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"24.1,1373.5 31.4,1646.5 26.6,1645.6 19.4,1803.2 64.3,1903.6 1143.6,1904.5 1144.6,1926.0 1149.8,1926.0 1235.8,1926.0 1350.7,1848.7 1345.1,1833.3 1329.2,1839.9 1264.2,1609.8 1234.7,1558.2 1228.5,1548.7 1191.7,1492.3 1195.5,1492.2 1214.9,1491.9 1326.4,1490.3 1610.9,1480.7 1598.7,81.5 1556.1,28.9 960.5,22.4 959.5,22.4 956.0,43.4 821.8,44.7 719.4,45.4 705.9,45.4 698.0,415.9 658.4,432.1 597.7,488.5 514.0,581.8 492.8,600.6 422.4,638.5 367.7,664.3 242.8,729.5 182.7,758.3 84.8,808.9 18.5,816.1 19.6,840.9 17.4,860.6 20.5,1143.6 24.1,1373.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0005__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1233.0,835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.20880413149295,42.54393964911737]}},{"type":"Feature","properties":{"resourceCoords":[1346.0,1841.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2081001180764,42.540254923676194]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0005__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Michigan | 1926 | sanborn03931_006 p5 [4]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.09"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4766.8"},{"label":"split_canvas_y","value":"5944.4"},{"label":"split_canvas_w","value":"1745.2"},{"label":"split_canvas_h","value":"1763.6"}],"created":"2026-10-19T01:37:42Z","modified":"2026-10-19T01:37:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0005__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0005","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1569.2,1502.4 1565.7,1516.9 1439.2,1517.8 1396.5,1489.3 1358.8,1489.9 1353.9,1498.0 1253.9,1517.8 1255.1,1580.2 1290.0,1681.2 1293.3,1690.2 1539.8,1852.5 1596.2,1890.8 1598.7,1866.1 1601.9,1833.5 1581.0,1670.4 1609.0,1554.8 1586.1,1505.8 1569.2,1502.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0005__4/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1380.4,1518.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2088998,42.5397938]}},{"type":"Feature","properties":{"resourceCoords":[1578.1,1518.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2080167,42.5402519]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0006__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 | 1926 | sanborn03931_006 p6 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4150.8"},{"label":"split_canvas_h","value":"2454.0"}],"created":"2026-10-19T01:37:42Z","modified":"2026-10-19T01:37:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0006","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"73.0,550.9 185.6,572.4 358.3,593.4 1006.1,606.0 1017.7,46.8 890.1,21.6 877.9,43.0 830.1,40.5 806.5,68.7 584.7,82.5 167.8,23.4 39.8,75.4 32.5,553.8 73.0,550.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[314.9,337.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.20965828248218,42.552260099713905]}},{"type":"Feature","properties":{"resourceCoords":[805.8,586.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2071526001208,42.55144526653785]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0006__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 | 1926 | sanborn03931_006 p6 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.88"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4120.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2391.2"},{"label":"split_canvas_h","value":"3448.0"}],"created":"2026-10-19T01:37:42Z","modified":"2026-10-19T01:37:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0006__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0006","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1584.5,844.9 1597.6,832.9 1605.5,659.1 1601.0,110.6 1421.8,61.6 1317.5,75.4 1241.3,38.6 1055.5,52.3 1045.9,829.9 1051.2,837.0 1584.5,844.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0006__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1051.2,184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2055027,42.5414765]}},{"type":"Feature","properties":{"resourceCoords":[1051.2,837.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2053549,42.5390988]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0006__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Michigan | 1926 | sanborn03931_006 p6 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.80"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2205.2"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"5502.8"}],"created":"2026-10-19T01:37:42Z","modified":"2026-10-19T01:37:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0006__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0006","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"66.8,1654.0 576.7,1708.9 604.1,1746.8 640.5,1789.9 730.9,1887.2 746.2,1872.3 1155.2,1738.6 1156.0,1723.3 1391.5,1903.1 1395.7,1911.6 1495.8,1894.5 1627.0,1871.5 1627.0,1854.9 1627.0,1850.4 1575.0,1858.3 1554.7,1357.6 1521.8,1196.7 1435.6,1076.1 1407.5,896.2 1270.7,863.3 784.2,907.3 736.0,877.1 720.8,765.3 748.7,754.1 746.3,655.2 67.9,585.6 34.2,906.3 88.4,1196.6 64.9,1240.2 79.1,1425.7 45.4,1529.5 68.0,1533.8 66.8,1654.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0006__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1535.0,1378.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.21042036032115,42.54867681599421]}},{"type":"Feature","properties":{"resourceCoords":[637.0,1040.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2146652381348,42.550364857194815]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Michigan | 1926 | sanborn03931_006 p7","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"21"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:37:42Z","modified":"2026-10-19T01:37:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0007","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"259.8,39.0 209.3,1.0 157.4,1.0 156.7,19.6 60.0,42.0 35.2,118.5 30.4,1574.2 58.0,1626.8 41.0,1792.1 67.5,1874.2 298.8,1901.0 878.4,1877.7 1065.5,1902.9 1579.0,1873.6 1612.0,1675.7 1585.0,1096.0 1615.2,264.1 1588.0,97.3 1460.3,59.5 1474.1,46.7 943.0,44.0 888.6,43.0 756.2,59.8 665.2,27.0 643.1,1.0 642.5,1.0 646.7,17.6 659.2,41.8 584.2,40.5 259.8,39.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039311926:03931_1926-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[829.0,1352.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2056861,42.5342965]}},{"type":"Feature","properties":{"resourceCoords":[829.0,1787.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2056079,42.5327045]}}]}}]}