{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08239_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Hitchcock, South-Dakota | 1923 | 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 4, 44.62999,-98.40856 +/-100m); p1__3 (tier 4, 44.62999,-98.40856 +/-100m); p1__4 (tier 4, 44.62999,-98.40856 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082391923:08239_1923-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hitchcock, South-Dakota | 1923 | sanborn08239_005 p1 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.17"},{"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":"2026-10-17T23:43:42Z","modified":"2026-10-17T23:43:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082391923:08239_1923-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082391923:08239_1923-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1290.8,34.8 1260.9,39.2 1197.2,103.8 1147.5,37.9 933.4,17.9 619.5,107.8 424.4,51.4 330.6,99.1 308.3,276.8 435.4,410.8 555.2,414.2 555.6,419.5 558.0,419.5 558.2,460.3 564.8,559.7 559.0,576.3 424.9,575.4 393.1,575.1 51.6,606.0 45.1,1849.2 828.5,1890.9 1532.2,1849.7 1604.4,1147.4 1545.2,936.0 1587.8,914.3 1548.2,752.0 1588.8,430.7 1515.6,43.9 1290.8,34.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082391923:08239_1923-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1449.0,1841.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.410333,44.628239]}},{"type":"Feature","properties":{"resourceCoords":[826.0,1841.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4108736,44.62942]}}]}}]}