{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08242_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Huron, South-Dakota | 1884 | 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":"3"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 2, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 44.36377,-98.21419 +/-213m); p2__2 (tier 4, 44.36377,-98.21419 +/-213m); p2__3 (tier 4, 44.36377,-98.21419 +/-213m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082421884:08242_1884-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Huron, South-Dakota | 1884 | sanborn08242_001 p1 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.85"},{"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":"2026-10-18T14:40:14Z","modified":"2026-10-18T14:40:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082421884:08242_1884-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082421884:08242_1884-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"147.9,1926.0 146.7,1844.8 619.7,1865.8 701.4,1335.9 702.1,1312.0 705.0,1312.1 706.1,1305.3 1302.8,1267.8 1433.6,1202.1 1548.2,132.1 1264.2,52.5 1031.5,103.9 143.5,47.2 145.2,1.0 124.7,1.0 135.2,294.3 65.9,294.9 67.5,941.7 68.0,1587.6 74.0,1587.6 125.8,1926.0 147.9,1926.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082421884:08242_1884-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[723.0,941.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.2141645,44.3620258]}},{"type":"Feature","properties":{"resourceCoords":[723.0,292.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.2124818,44.3620237]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082421884:08242_1884-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Huron, South-Dakota | 1884 | sanborn08242_001 p2 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.90"},{"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":"2026-10-18T14:40:14Z","modified":"2026-10-18T14:40:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082421884:08242_1884-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082421884:08242_1884-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"160.4,1748.5 791.1,1746.5 791.7,1814.2 1078.7,1803.7 1078.8,1823.7 1586.3,1842.1 1584.8,1196.2 1506.4,1068.7 1505.7,742.2 1235.7,636.4 1228.3,522.9 930.2,509.4 866.2,438.6 823.0,161.9 524.7,70.3 156.3,112.2 158.1,399.9 160.4,1748.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082421884:08242_1884-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[790.0,1119.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.2124854,44.3644346]}},{"type":"Feature","properties":{"resourceCoords":[1414.0,1119.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.2108263,44.3644318]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082421884:08242_1884-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Huron, South-Dakota | 1884 | sanborn08242_001 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T14:40:14Z","modified":"2026-10-18T14:40:14Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082421884:08242_1884-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082421884:08242_1884-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"76.5,1851.1 101.5,77.4 497.6,61.0 635.6,150.9 1059.4,252.2 1147.9,216.8 1171.1,129.2 1516.7,95.7 1513.6,392.9 1493.0,1785.7 842.6,1775.8 842.5,1781.9 500.8,1828.6 499.4,1850.9 76.5,1851.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184hm:g082421884:08242_1884-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[861.0,1780.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.21579037573517,44.36323482818253]}},{"type":"Feature","properties":{"resourceCoords":[220.0,1780.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.21744026246238,44.36321814553398]}}]}}]}