{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn08216_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Centerville, South-Dakota | 1904 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"5"},{"label":"placed","value":"3"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 3"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p1__1 (tier 2, 43.11724,-96.96086 +/-100m); p2__3 (tier 4, 43.11773,-96.96299 +/-309m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161904:08216_1904-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Centerville, South-Dakota | 1904 | sanborn08216_003 p1 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"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":"2026-09-21T10:44:42Z","modified":"2026-09-21T10:44:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161904:08216_1904-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161904:08216_1904-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1569.2 303.1,1569.0 314.7,1927.0 1628.0,1927.0 1628.0,124.5 -0.0,131.7 0.0,1569.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161904:08216_1904-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[832.0,681.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.961227,43.11612]}},{"type":"Feature","properties":{"resourceCoords":[1390.0,681.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.959767,43.116126]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161904:08216_1904-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Centerville, South-Dakota | 1904 | sanborn08216_003 p2 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"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":"2026-09-21T10:44:42Z","modified":"2026-09-21T10:44:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161904:08216_1904-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161904:08216_1904-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1529.2,92.0 1628.0,92.2 1628.0,-0.0 1059.4,0.0 1059.7,262.1 751.7,265.2 750.0,0.0 -0.0,0.0 -0.0,1927.0 1295.3,1927.0 1303.7,1549.8 1532.3,1553.9 1529.2,92.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161904:08216_1904-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[948.0,337.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9597912,43.1182663]}},{"type":"Feature","properties":{"resourceCoords":[948.0,1491.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9627437,43.1182493]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161904:08216_1904-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Centerville, South-Dakota | 1904 | sanborn08216_003 p2 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"3000.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1238.8"},{"label":"split_canvas_h","value":"1060.8"}],"created":"2026-09-21T10:44:42Z","modified":"2026-09-21T10:44:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161904:08216_1904-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161904:08216_1904-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"750.0,0.0 751.7,265.2 1059.7,262.1 1059.4,0.0 750.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161904:08216_1904-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[750.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.96673008972967,43.11888705277958]}},{"type":"Feature","properties":{"resourceCoords":[1059.7,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.9665096925317,43.11944816969428]}},{"type":"Feature","properties":{"resourceCoords":[1059.7,265.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.96585047195734,43.11931108245318]}},{"type":"Feature","properties":{"resourceCoords":[750.0,265.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.9660708691553,43.11874996553848]}},{"type":"Feature","properties":{"resourceCoords":[1033.7,220.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9659809,43.1192873]}}]}}]}