{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08236_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Hartford, South-Dakota | 1909 | 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":"6"},{"label":"placed","value":"4"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p1__3 (tier 4, 43.62268,-96.94439 +/-252m); p2__3 (tier 2, 43.62258,-96.94405 +/-118m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hartford, South-Dakota | 1909 | sanborn08236_004 p1 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.08"},{"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":"2469.6"},{"label":"split_canvas_h","value":"5096.0"}],"created":"2026-10-18T08:58:45Z","modified":"2026-10-18T08:58:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"92.5,1273.0 95.0,1175.6 354.7,1241.4 582.1,1229.2 590.3,549.1 590.1,443.1 589.8,127.0 547.2,79.8 213.8,45.4 213.3,104.5 66.5,103.5 67.0,627.0 72.8,627.0 87.5,1273.0 90.8,1273.0 92.5,1273.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[67.0,627.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.944145,43.6219638]}},{"type":"Feature","properties":{"resourceCoords":[590.4,627.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.942644,43.6219676]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hartford, South-Dakota | 1909 | sanborn08236_004 p1 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.75"},{"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":"2026-10-18T08:58:45Z","modified":"2026-10-18T08:58:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1563.7,1781.3 1608.7,570.5 1497.0,104.3 1336.7,127.0 1308.0,286.1 1308.0,319.5 1302.0,319.6 1301.2,324.1 1031.3,325.4 1031.0,322.8 1028.4,322.8 1028.3,306.1 993.7,84.9 702.0,86.4 637.6,334.7 620.4,1268.2 617.4,1268.6 617.4,1274.0 577.7,1274.0 59.2,1344.0 103.4,1424.0 45.4,1489.9 54.4,1832.6 1.0,1844.1 1.0,1863.7 864.7,1854.9 1462.2,1854.0 1627.0,1853.7 1627.0,1787.3 1563.7,1781.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[262.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9472188,43.6230496]}},{"type":"Feature","properties":{"resourceCoords":[1450.0,683.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.944168,43.6252176]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hartford, South-Dakota | 1909 | sanborn08236_004 p2 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.81"},{"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":"2026-10-18T08:58:45Z","modified":"2026-10-18T08:58:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1589.8,1386.0 1584.3,1386.0 1580.4,672.4 1574.0,672.2 1583.3,94.1 996.0,80.0 145.8,66.8 146.3,47.8 63.2,63.5 40.1,141.9 42.5,1067.2 141.5,1485.2 471.0,1506.4 471.4,1513.1 474.2,1513.1 474.7,1570.2 486.9,1779.2 592.5,1874.7 1194.8,1879.9 1267.4,1838.4 1320.9,1603.1 1320.9,1598.5 1322.0,1598.5 1322.6,1595.7 1580.8,1593.8 1589.8,1386.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[394.0,653.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.947212,43.6219542]}},{"type":"Feature","properties":{"resourceCoords":[996.0,80.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9456786,43.6230553]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hartford, South-Dakota | 1909 | sanborn08236_004 p2 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"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":"6039.6"},{"label":"split_canvas_w","value":"1910.8"},{"label":"split_canvas_h","value":"1668.4"}],"created":"2026-10-18T08:58:45Z","modified":"2026-10-18T08:58:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"73.0,1556.8 74.0,1926.0 81.4,1926.0 476.7,1920.7 476.7,1919.4 455.9,1563.0 97.5,1583.8 73.0,1556.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082361909:08236_1909-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1509.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.94284075632389,43.62309458758847]}},{"type":"Feature","properties":{"resourceCoords":[477.7,1509.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.94159905778885,43.62309631277175]}},{"type":"Feature","properties":{"resourceCoords":[477.7,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.94159697549262,43.62230961908395]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.94283867402766,43.62230789390067]}},{"type":"Feature","properties":{"resourceCoords":[73.0,1534.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.942651,43.6230478]}}]}}]}