{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn08208_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Bridgewater, South-Dakota | 1923 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"9"},{"label":"placed","value":"5"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 6"},{"label":"key map","value":"none"},{"label":"split sheets","value":"3 sheet(s) cut into 9 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 43.58009,-97.51700 +/-17595m); p3__2 (tier 2, 43.55030,-97.50120 +/-100m); p3__3 (tier 2, 43.55030,-97.50120 +/-100m)"},{"label":"withheld","value":"p1__1 (21.0 km from the catalogue location)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bridgewater, South-Dakota | 1923 | sanborn08208_005 p1 [3]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3060.0"},{"label":"split_canvas_w","value":"3656.4"},{"label":"split_canvas_h","value":"4648.0"}],"created":"2026-09-22T13:13:17Z","modified":"2026-09-22T13:13:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"913.8,1855.8 910.2,1009.0 909.9,947.4 856.7,947.5 701.5,769.4 695.8,769.4 81.0,781.6 81.0,1856.0 913.8,1855.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[81.0,1326.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.50083,43.5517085]}},{"type":"Feature","properties":{"resourceCoords":[81.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.500831,43.550712]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0001__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bridgewater, South-Dakota | 1923 | sanborn08208_005 p1 [4]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"3639.6"},{"label":"split_canvas_y","value":"3780.4"},{"label":"split_canvas_w","value":"2872.4"},{"label":"split_canvas_h","value":"3927.6"}],"created":"2026-09-22T13:13:17Z","modified":"2026-09-22T13:13:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0001__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1138.0,1927.0 1628.0,1927.0 1628.0,1548.1 1527.5,1480.1 1565.1,1343.2 1568.1,996.1 1023.8,996.1 1012.1,1191.0 911.0,1190.8 913.4,1765.9 1138.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0001__4/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1023.8,996.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.502287,43.5497059]}},{"type":"Feature","properties":{"resourceCoords":[1568.1,996.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.50084,43.5497057]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bridgewater, South-Dakota | 1923 | sanborn08208_005 p2 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"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":"2026-09-22T13:13:17Z","modified":"2026-09-22T13:13:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1015.0,1723.0 1585.3,1721.8 1585.7,72.9 1628.0,73.2 1628.0,0.0 0.0,-0.0 0.0,361.3 392.1,362.8 392.9,612.4 213.2,612.6 213.2,634.4 -0.0,635.0 -0.0,1927.0 160.0,1927.0 451.0,1927.0 1003.2,1927.0 1015.0,1723.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1015.0,1723.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.502287,43.5497059]}},{"type":"Feature","properties":{"resourceCoords":[1015.0,83.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.502277,43.552716]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bridgewater, South-Dakota | 1923 | sanborn08208_005 p2 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1445.2"},{"label":"split_canvas_w","value":"1571.6"},{"label":"split_canvas_h","value":"1006.0"}],"created":"2026-09-22T13:13:17Z","modified":"2026-09-22T13:13:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,612.8 392.8,588.2 392.1,362.8 0.0,361.3 -0.0,612.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,361.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.50533543554695,43.55213620832399]}},{"type":"Feature","properties":{"resourceCoords":[392.9,361.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.50431395402815,43.552135085602515]}},{"type":"Feature","properties":{"resourceCoords":[392.9,612.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.50431494924321,43.55166127847743]}},{"type":"Feature","properties":{"resourceCoords":[0.0,612.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.50533643076201,43.551662401198904]}},{"type":"Feature","properties":{"resourceCoords":[79.0,588.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.505131,43.5517073]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bridgewater, South-Dakota | 1923 | sanborn08208_005 p3 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"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":"2026-09-22T13:13:17Z","modified":"2026-09-22T13:13:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"34.0,1090.0 140.6,1162.0 140.6,1563.5 -0.0,1563.5 0.0,1590.4 462.6,1927.0 931.0,1927.0 1102.0,1927.0 1129.9,1927.0 1132.8,1590.6 1628.0,1639.3 1628.0,0.0 80.5,21.8 73.9,944.8 34.0,1090.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184bm:g082081923:08208_1923-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[609.0,577.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.499507,43.5497055]}},{"type":"Feature","properties":{"resourceCoords":[77.0,577.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.50084,43.5497057]}}]}}]}