{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08239_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Hitchcock, South-Dakota | 1911 | 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, 44.63000,-98.40857 +/-100m); p1__3 (tier 4, 44.63000,-98.40857 +/-100m); p1__4 (tier 4, 44.63000,-98.40857 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082391911:08239_1911-0001__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 | 1911 | sanborn08239_004 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":"2026-10-17T22:45:55Z","modified":"2026-10-17T22:45:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082391911:08239_1911-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082391911:08239_1911-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"53.1,1836.9 1590.7,1843.6 1605.1,788.3 1572.8,161.8 1531.7,134.1 1576.6,84.3 1341.5,36.4 1187.0,115.0 975.5,38.9 678.2,28.0 351.9,172.3 307.3,265.2 362.2,329.0 362.7,329.5 362.7,330.4 364.3,419.9 560.2,412.1 560.6,417.1 564.5,417.0 564.5,477.0 569.9,558.5 564.5,575.0 445.1,575.0 38.4,628.9 53.1,1836.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082391911:08239_1911-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1462.0,1846.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.410333,44.628239]}},{"type":"Feature","properties":{"resourceCoords":[835.0,1846.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4108736,44.62942]}}]}}]}