{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08209_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Bristol, South-Dakota | 1910 | mapsnap generated fit (2026-10-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-22"},{"label":"run","value":"corpus-v2.1"},{"label":"pages","value":"5"},{"label":"placed","value":"2"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 45.34544,-97.75049 +/-129m); p1__4 (tier 4, 45.34544,-97.75049 +/-129m); p1__5 (tier 4, 45.34544,-97.75049 +/-129m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082091910:08209_1910-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bristol, South-Dakota | 1910 | sanborn08209_004 p1 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.65"},{"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":"2026-10-22T12:49:30Z","modified":"2026-10-22T12:49:30Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082091910:08209_1910-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082091910:08209_1910-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"295.5,1892.8 366.7,1887.5 1380.4,1872.8 1419.8,1650.0 1420.2,1650.0 1583.4,1647.2 1594.6,1347.6 1533.9,1089.8 1470.8,1083.0 1398.3,1083.0 1343.5,1083.0 1343.5,1083.0 1305.8,1065.3 1295.8,751.1 1339.5,694.6 1489.4,689.5 1569.2,597.8 1505.4,561.2 1456.8,467.8 1258.1,379.4 1159.7,271.0 890.1,153.1 820.2,45.1 78.0,42.1 39.5,762.5 116.7,863.4 65.2,976.9 96.9,1262.8 234.9,1308.8 251.8,1309.0 251.7,1314.5 253.2,1315.0 267.1,1903.4 316.5,1908.2 295.5,1892.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082091910:08209_1910-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[717.0,1364.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.7500319,45.3457263]}},{"type":"Feature","properties":{"resourceCoords":[182.0,288.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.7515102,45.3477461]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082091910:08209_1910-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bristol, South-Dakota | 1910 | sanborn08209_004 p1 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.19"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"5374.0"},{"label":"split_canvas_y","value":"2776.0"},{"label":"split_canvas_w","value":"1138.0"},{"label":"split_canvas_h","value":"1556.0"}],"created":"2026-10-22T12:49:30Z","modified":"2026-10-22T12:49:30Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082091910:08209_1910-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082091910:08209_1910-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1504.7,719.8 1525.7,735.0 1411.7,741.5 1424.2,1069.2 1566.7,1062.8 1575.5,719.7 1504.7,719.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082091910:08209_1910-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1343.5,694.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.75158041980679,45.34476318856606]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,694.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.75081398122929,45.34476607093489]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1083.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.75080836692011,45.34402923622445]}},{"type":"Feature","properties":{"resourceCoords":[1343.5,1083.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.75157480549761,45.344026353855625]}},{"type":"Feature","properties":{"resourceCoords":[1376.5,719.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.7514913,45.3447144]}}]}}]}