{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn08256_008.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Pierre, South-Dakota | 1915 | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"19"},{"label":"placed","value":"14"},{"label":"unplaced","value":"5"},{"label":"fit sources","value":"georef 11, georef-snap 1, georef:contradicted 1, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"2 sheet(s) cut into 12 panels"},{"label":"unplaced pages","value":"p8__2 (tier 1, 44.37225,-100.35272 +/-100m); p8__3 (tier 2, 44.37023,-100.35074 +/-199m); p9__1 (tier 1, 44.36528,-100.34072 +/-101m); p9__2 (tier 1, 44.36832,-100.35355 +/-100m); p9__4 (tier 1, 44.36794,-100.35293 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p1","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"6"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1927.0 -0.0,1816.3 103.0,1015.5 718.0,1015.5 1331.2,1870.2 1332.0,1927.0 -0.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[103.0,1016.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3563529,44.3663984]}},{"type":"Feature","properties":{"resourceCoords":[718.0,1016.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3550239,44.3656438]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 1463.4,-0.0 1502.3,38.5 1483.2,1858.0 1628.0,1873.1 1628.0,1927.0 -0.0,1927.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.35167995628855,44.37206300244077]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.34837073572552,44.37015507151393]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.35150781605978,44.3673352777218]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.3548170366228,44.36924320864864]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p3","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"233.1,6.0 1628.0,-0.0 1628.0,234.7 1433.7,232.7 1427.6,1237.9 1628.0,1238.5 1628.0,1927.0 358.5,1919.7 358.5,1865.9 214.2,1849.8 233.1,6.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[860.0,1236.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3493652,44.3677518]}},{"type":"Feature","properties":{"resourceCoords":[860.0,634.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3483832,44.3686341]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p4","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0004","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 1628.0,-0.0 1628.0,249.9 1537.6,250.1 1547.1,1876.0 1435.8,1874.7 1436.0,1927.0 -0.0,1927.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[272.0,1024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3589301,44.3678728]}},{"type":"Feature","properties":{"resourceCoords":[1542.0,1024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3563529,44.3663984]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p5","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0005","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"171.7,1874.0 819.0,1869.1 816.0,1028.0 168.3,1029.1 165.6,261.4 255.2,261.5 255.8,13.6 1166.8,-0.0 1162.8,257.6 1460.4,254.1 1465.6,1927.0 171.9,1927.0 171.7,1874.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[816.0,1028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3550239,44.3656438]}},{"type":"Feature","properties":{"resourceCoords":[1469.0,1028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3536857,44.3648814]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p6","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0006","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"882.6,39.3 882.6,-0.0 1408.0,-0.0 1408.5,36.4 1454.8,36.1 1474.5,1896.3 1628.0,1894.0 1628.0,1927.0 -0.0,1927.0 -0.0,1812.2 188.7,1809.3 160.3,43.3 882.6,39.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[822.0,826.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3523995,44.3641419]}},{"type":"Feature","properties":{"resourceCoords":[185.0,1690.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.355075,44.3636554]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p7","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0007","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"39.0,1927.0 46.6,52.5 -0.0,52.1 0.0,-0.0 1628.0,-0.0 1628.0,1927.0 39.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[688.0,836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.349818,44.3626807]}},{"type":"Feature","properties":{"resourceCoords":[688.0,54.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3485758,44.3637969]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0008__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p8 [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":"1584.0"},{"label":"split_canvas_h","value":"2627.2"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0008","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"396.0,504.6 395.9,0.0 0.0,0.0 -0.0,634.6 23.6,605.6 82.7,652.8 396.0,656.8 396.0,504.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0008__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":[-100.34870854194769,44.37142100198187]}},{"type":"Feature","properties":{"resourceCoords":[396.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.34767066442878,44.3714226083021]}},{"type":"Feature","properties":{"resourceCoords":[396.0,656.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.34766693546626,44.37019196956356]}},{"type":"Feature","properties":{"resourceCoords":[0.0,656.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.34870481298518,44.37019036324333]}},{"type":"Feature","properties":{"resourceCoords":[74.0,52.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3485143,44.3713239]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0008__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p8 [4]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"4323.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2188.4"},{"label":"split_canvas_h","value":"1172.8"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0008__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0008","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,0.0 1080.9,0.0 1081.2,293.2 1628.0,292.7 1628.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0008__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1080.9,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.3328394752881,44.36357532443748]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.33126782487487,44.3635809855945]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,293.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.33126359082314,44.362980255877176]}},{"type":"Feature","properties":{"resourceCoords":[1080.9,293.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.33283524123637,44.36297459472015]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0008__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p8 [5]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"17"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1170.8"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"6537.2"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0008__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0008","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1927.0 1479.5,1927.0 1491.5,292.8 1081.2,293.2 807.5,293.6 808.2,501.1 396.0,504.6 396.0,656.8 0.0,651.7 -0.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0008__5/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[654.0,1256.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3554463,44.3712335]}},{"type":"Feature","properties":{"resourceCoords":[64.0,1256.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3566911,44.3719306]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p9 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"3438.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3073.2"},{"label":"split_canvas_h","value":"3387.2"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,0.0 1193.6,0.0 1188.6,483.7 859.7,489.5 861.8,846.8 1004.7,845.1 1628.0,838.1 1628.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[907.6,610.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3414975,44.3641739]}},{"type":"Feature","properties":{"resourceCoords":[1442.2,27.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3400851,44.3653201]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p9 [5]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3352.4"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"4355.6"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"348.3,1841.5 349.2,1927.0 906.0,1927.0 1006.4,1927.0 1003.0,1411.1 1134.2,1279.6 1628.0,1277.6 1628.0,838.1 1004.7,845.1 1005.6,1077.5 912.9,1190.7 145.2,1197.0 148.0,1843.0 348.3,1841.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009__5/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,838.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.34684403867718,44.36872371529066]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,838.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.34353227557479,44.366800942379335]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.34533192197048,44.36521770135116]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.34864368507287,44.36714047426249]}},{"type":"Feature","properties":{"resourceCoords":[148.0,1843.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3482038,44.3670878]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009__6/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p9 [6]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3380.4"},{"label":"split_canvas_w","value":"4022.4"},{"label":"split_canvas_h","value":"1412.4"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009__6/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1112.8 297.4,1100.7 987.6,1099.5 1005.6,1077.5 1004.7,845.1 861.8,846.8 480.5,851.5 480.3,851.5 480.2,854.4 84.4,856.3 0.0,856.7 0.0,1112.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009__6/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,845.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.35261617342248,44.36674881265507]}},{"type":"Feature","properties":{"resourceCoords":[1005.6,845.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.35057988323211,44.36555177213156]}},{"type":"Feature","properties":{"resourceCoords":[1005.6,1198.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.35116760433414,44.36504111348832]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1198.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.3532038945245,44.366238154011825]}},{"type":"Feature","properties":{"resourceCoords":[641.8,1098.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-100.3517379,44.3656189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009__7/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pierre, South-Dakota | 1915 | sanborn08256_008 p9 [7]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"4012.0"},{"label":"split_canvas_y","value":"5110.4"},{"label":"split_canvas_w","value":"2500.0"},{"label":"split_canvas_h","value":"2597.6"}],"created":"2026-09-23T22:09:31Z","modified":"2026-09-23T22:09:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009__7/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1073.0,1927.0 1628.0,1927.0 1628.0,1277.6 1134.2,1279.6 1003.0,1411.1 1006.4,1927.0 1073.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184pm:g082561915:08256_1915-0009__7/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1003.0,1277.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.32278053528488,44.36517081402177]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1277.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.32119548168221,44.365044523334156]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.32137791262335,44.36385770714602]}},{"type":"Feature","properties":{"resourceCoords":[1003.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-100.32296296622602,44.363983997833635]}}]}}]}