{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08221_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Custer, South-Dakota | 1915 | mapsnap generated fit (2026-10-17)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-17"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"4"},{"label":"placed","value":"1"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 43.77123,-103.59799 +/-100m); p1__3 (tier 4, 43.76691,-103.59911 +/-100m); p1__4 (tier 4, 43.76691,-103.59911 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082211915:08221_1915-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Custer, South-Dakota | 1915 | sanborn08221_005 p1 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.40"},{"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":"2026-10-17T22:39:34Z","modified":"2026-10-17T22:39:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082211915:08221_1915-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082211915:08221_1915-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1221.5,1249.0 1223.5,1248.9 1223.5,1248.0 1263.0,1248.0 1550.4,1241.4 1511.2,594.5 1321.4,581.5 1283.0,582.0 1283.0,578.9 1277.8,578.6 1281.0,273.8 1283.0,273.7 1283.0,271.0 1357.8,270.7 1517.5,264.2 1553.5,204.8 1481.6,44.4 1303.2,76.0 469.1,30.5 423.3,272.5 144.0,272.3 67.3,316.2 56.2,1862.0 1147.3,1879.2 1221.5,1249.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082211915:08221_1915-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[406.0,883.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.599325,43.767805]}},{"type":"Feature","properties":{"resourceCoords":[406.0,1433.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.6008694,43.7673794]}}]}}]}