{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn08216_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Centerville, South-Dakota | 1917 | 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":"7"},{"label":"placed","value":"5"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 4, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 43.11824,-96.95843 +/-161m); p1__3 (tier 2, 43.11627,-96.96260 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Centerville, South-Dakota | 1917 | sanborn08216_005 p1 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1651.2"},{"label":"split_canvas_h","value":"5088.0"}],"created":"2026-09-22T13:09:47Z","modified":"2026-09-22T13:09:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1272.0 314.1,1272.0 311.9,-0.0 0.0,0.0 -0.0,1272.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[311.9,1043.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9627271,43.1161088]}},{"type":"Feature","properties":{"resourceCoords":[311.9,507.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9627353,43.1171649]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Centerville, South-Dakota | 1917 | sanborn08216_005 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T13:09:47Z","modified":"2026-09-22T13:09:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,62.4 1628.0,1927.0 -0.0,1927.0 22.2,44.0 1628.0,62.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.96279663667453,43.11724983133792]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.95848205505874,43.11731481602996]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.95837742078633,43.113560503496444]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.96269200240212,43.113495518804406]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Centerville, South-Dakota | 1917 | sanborn08216_005 p3 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1478.4"},{"label":"split_canvas_h","value":"1443.6"}],"created":"2026-09-22T13:09:47Z","modified":"2026-09-22T13:09:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 0.0,356.8 363.4,360.9 369.6,0.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.95747019759901,43.11896692638362]}},{"type":"Feature","properties":{"resourceCoords":[369.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.95745564051917,43.11821920808456]}},{"type":"Feature","properties":{"resourceCoords":[369.6,360.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.95845826129543,43.11820887365454]}},{"type":"Feature","properties":{"resourceCoords":[0.0,360.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.95847281837527,43.1189565919536]}},{"type":"Feature","properties":{"resourceCoords":[337.6,330.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9583762,43.1182744]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Centerville, South-Dakota | 1917 | sanborn08216_005 p3 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"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":"2026-09-22T13:09:47Z","modified":"2026-09-22T13:09:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1107.5,1754.7 1110.1,1458.3 1591.7,1462.5 1598.4,258.2 1366.1,258.4 1365.8,-0.0 369.6,0.0 363.4,360.9 0.0,356.8 -0.0,1927.0 1333.6,1927.0 1336.4,1756.7 1107.5,1754.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[562.0,934.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9612707,43.1193164]}},{"type":"Feature","properties":{"resourceCoords":[64.0,934.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9612911,43.1203504]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0003__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Centerville, South-Dakota | 1917 | sanborn08216_005 p3 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"5334.4"},{"label":"split_canvas_y","value":"6216.0"},{"label":"split_canvas_w","value":"1177.6"},{"label":"split_canvas_h","value":"1492.0"}],"created":"2026-09-22T13:09:47Z","modified":"2026-09-22T13:09:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0003__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1571.5,1927.0 1572.9,1631.4 1628.0,1631.2 1628.0,1554.0 1339.7,1554.4 1333.6,1927.0 1571.5,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184cm:g082161917:08216_1917-0003__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1333.6,1554.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.95827333529249,43.11768029722682]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1554.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.95826066436229,43.1170841549246]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.95929937059898,43.117072466260666]}},{"type":"Feature","properties":{"resourceCoords":[1333.6,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.95931204152919,43.11766860856289]}},{"type":"Feature","properties":{"resourceCoords":[1573.1,1585.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9583519,43.1171943]}}]}}]}