{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08218_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Chamberlain, South-Dakota | 1914 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"14"},{"label":"placed","value":"6"},{"label":"unplaced","value":"8"},{"label":"fit sources","value":"georef 5, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"5 sheet(s) cut into 13 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 43.81028,-99.33245 +/-155m); p2__1 (tier 1, 43.80881,-99.32687 +/-100m); p2__3 (tier 1, 43.80662,-99.32741 +/-100m); p3__2 (tier 2, 43.81304,-99.32879 +/-100m); p4__1 (tier 1, 43.80697,-99.32430 +/-100m); p6__1 (tier 4, 43.81036,-99.33042 +/-382m); p6__2 (tier 4, 43.81036,-99.33042 +/-382m); p6__3 (tier 4, 43.81036,-99.33042 +/-382m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chamberlain, South-Dakota | 1914 | sanborn08218_006 p1 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.73"},{"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":"2159.2"},{"label":"split_canvas_h","value":"3789.6"}],"created":"2026-10-18T17:49:34Z","modified":"2026-10-18T17:49:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"500.6,922.2 506.8,606.2 506.8,210.1 507.7,83.2 12.5,82.2 12.1,123.7 36.8,123.6 31.1,917.7 500.6,922.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[506.8,606.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.3324095,43.8077549]}},{"type":"Feature","properties":{"resourceCoords":[506.8,210.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.3319777,43.8084167]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chamberlain, South-Dakota | 1914 | sanborn08218_006 p1 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3789.6"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"3918.4"}],"created":"2026-10-18T17:49:34Z","modified":"2026-10-18T17:49:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"25.9,1868.6 108.8,1926.0 208.3,1926.0 1567.8,1922.9 1563.0,1003.2 1061.0,1028.2 1061.0,1023.9 525.6,1025.2 525.5,1034.8 39.5,1015.1 37.4,1162.8 34.4,1555.5 25.9,1868.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[67.0,1171.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.33191748458214,43.808379236617775]}},{"type":"Feature","properties":{"resourceCoords":[1574.0,1567.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.32881545640599,43.80653323322306]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chamberlain, South-Dakota | 1914 | sanborn08218_006 p2 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.87"},{"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":"2026-10-18T17:49:34Z","modified":"2026-10-18T17:49:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"130.4,1894.3 390.4,1861.4 1051.3,1859.3 1544.0,1856.0 1542.0,637.7 1539.2,318.9 1532.7,175.6 1520.4,58.8 1027.5,122.5 888.5,36.5 789.0,277.0 789.0,301.0 779.0,301.2 758.5,350.9 714.3,352.0 710.0,317.9 671.0,304.4 435.6,419.3 405.2,539.4 403.5,539.7 403.5,540.7 397.4,540.8 92.3,594.9 37.7,848.1 46.3,1629.2 73.4,1850.7 130.4,1894.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[392.0,1369.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.331881,43.8134544]}},{"type":"Feature","properties":{"resourceCoords":[1544.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.3297692,43.8117065]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chamberlain, South-Dakota | 1914 | sanborn08218_006 p3 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"14"},{"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":"2026-10-18T17:49:34Z","modified":"2026-10-18T17:49:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1507.8,1921.3 1499.5,1908.7 1571.2,1857.2 1595.4,1610.8 1586.6,361.8 1415.0,308.8 331.4,308.8 329.3,306.0 323.0,306.0 323.0,297.5 186.6,113.3 238.8,55.2 77.5,76.7 90.1,193.2 97.2,336.1 101.2,653.9 107.9,1868.5 1129.2,1869.5 1266.4,1877.0 1507.8,1921.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1124.0,838.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.3262468,43.8125907]}},{"type":"Feature","properties":{"resourceCoords":[102.0,838.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.3286094,43.8134305]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chamberlain, South-Dakota | 1914 | sanborn08218_006 p4 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"13"},{"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":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-10-18T17:49:34Z","modified":"2026-10-18T17:49:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0004","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1537.4,1714.2 1534.0,1370.0 1534.0,448.0 1528.7,9.4 1041.7,14.2 388.3,18.2 131.4,51.6 138.9,57.3 51.7,108.2 67.0,1639.4 301.7,1660.3 302.3,1662.2 305.0,1662.2 305.0,1670.7 361.5,1847.2 432.0,1892.8 1051.1,1881.5 1050.8,1840.7 1538.6,1833.5 1537.4,1714.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1534.0,1038.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.3309361,43.8099708]}},{"type":"Feature","properties":{"resourceCoords":[1534.0,448.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.3302597,43.8109639]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chamberlain, South-Dakota | 1914 | sanborn08218_006 p5","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T17:49:34Z","modified":"2026-10-18T17:49:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0005","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"88.8,1729.3 89.2,1381.8 99.3,451.3 98.8,8.6 1120.7,21.6 1258.0,30.7 1499.0,77.8 1585.7,212.9 1615.2,1795.4 1112.5,1827.2 1112.5,1822.9 576.0,1831.3 576.0,1840.9 88.8,1827.7 88.8,1729.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082181914:08218_1914-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[578.0,452.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.3291484,43.8105791]}},{"type":"Feature","properties":{"resourceCoords":[1114.0,1386.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.3289405,43.8085837]}}]}}]}