{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08252_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Northville, South-Dakota | 1893 | 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__2 (tier 4, 45.15472,-98.57866 +/-100m); p1__3 (tier 4, 45.15472,-98.57866 +/-100m); p1__4 (tier 4, 45.15472,-98.57866 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184nm:g082521893:08252_1893-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Northville, South-Dakota | 1893 | sanborn08252_001 p1 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.34"},{"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":"2026-10-17T22:13:34Z","modified":"2026-10-17T22:13:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184nm:g082521893:08252_1893-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184nm:g082521893:08252_1893-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1535.2,1848.2 1592.1,1363.9 1557.7,35.6 1380.7,41.1 1338.5,93.5 1215.7,31.7 88.5,30.7 119.2,314.2 62.5,1242.5 155.3,1847.3 527.2,1875.3 590.6,1451.8 1285.9,1438.0 1359.6,1448.2 1364.0,1448.2 1364.0,1448.8 1396.8,1453.4 1415.8,1881.7 1535.2,1848.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184nm:g082521893:08252_1893-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[427.0,1255.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.579832,45.15423]}},{"type":"Feature","properties":{"resourceCoords":[1029.0,23.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.5777728,45.1565344]}}]}}]}