{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn08251_008.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Mitchell, South-Dakota | 1923 | 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":"38"},{"label":"placed","value":"30"},{"label":"unplaced","value":"8"},{"label":"fit sources","value":"georef 28, georef-snap 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 19 panels"},{"label":"unplaced pages","value":"p1 (tier 1, 43.71609,-98.02687 +/-245m); p19__1 (tier 1, 43.70799,-98.02478 +/-100m); p19__3 (tier 1, 43.70558,-98.02396 +/-148m); p20__2 (tier 1, 43.71158,-98.04822 +/-100m); p20__3 (tier 1, 43.71199,-98.04728 +/-100m); p20__4 (tier 1, 43.71467,-98.00794 +/-100m); p25__2 (tier 1, 43.69757,-98.02615 +/-100m); p6__2 (tier 1, 43.72125,-98.02523 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p10","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0010","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"230.1,755.9 -0.0,755.7 -0.0,0.0 1547.5,0.0 1538.3,1884.2 228.4,1880.5 230.1,755.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[352.0,1318.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0199891,43.714511]}},{"type":"Feature","properties":{"resourceCoords":[1544.0,1318.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0170397,43.7145371]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p11","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0011","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"118.0,122.0 1628.0,103.0 1628.0,657.1 1628.0,1202.5 1628.0,1753.6 123.7,1759.2 118.0,122.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[673.0,1208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0324885,43.7124021]}},{"type":"Feature","properties":{"resourceCoords":[122.0,1208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0338736,43.7123946]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p12","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0012","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"318.0,123.5 1573.7,114.0 1575.1,1781.5 315.2,1781.4 318.0,123.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[469.0,1226.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0297055,43.7124309]}},{"type":"Feature","properties":{"resourceCoords":[1021.0,673.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0283367,43.7134403]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p13","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0013","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"126.3,1757.9 129.3,96.8 1359.4,99.0 1363.5,1204.5 1628.0,1206.1 1628.0,1760.5 126.3,1757.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1233.0,653.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0213384,43.712487]}},{"type":"Feature","properties":{"resourceCoords":[127.0,1203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0240987,43.7114667]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p14","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0014","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1218.5 -0.0,116.8 1588.5,124.2 1567.6,1777.8 261.5,1773.7 263.6,1221.1 -0.0,1218.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[971.0,1224.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0185501,43.7115057]}},{"type":"Feature","properties":{"resourceCoords":[424.0,117.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0199692,43.7135056]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p15","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0015","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1550.7 -0.0,1434.1 114.6,1432.6 111.0,693.0 -0.0,694.0 -0.0,137.5 1628.0,131.4 1628.0,1927.0 117.0,1927.0 115.2,1549.5 -0.0,1550.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1214.0,1242.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0310686,43.7094034]}},{"type":"Feature","properties":{"resourceCoords":[111.0,693.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0338474,43.7103845]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p16","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0016","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"338.2,1497.5 333.1,112.5 1563.0,106.0 1575.5,1635.1 1027.7,1505.5 1027.0,1316.6 478.8,1325.3 479.8,1495.5 338.2,1497.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[478.0,1208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0296715,43.7094125]}},{"type":"Feature","properties":{"resourceCoords":[1563.0,106.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0269247,43.7114443]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p17","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0017","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1330.1,1691.6 1628.0,1689.3 1628.0,1927.0 -0.0,1927.0 -0.0,1252.9 122.9,1280.1 125.1,50.5 1323.0,49.5 1330.1,1691.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1218.0,1145.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0212939,43.7084711]}},{"type":"Feature","properties":{"resourceCoords":[1219.0,50.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0213131,43.7104766]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p18","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0018","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"298.9,1679.1 -0.0,1680.0 -0.0,32.6 1592.8,32.9 1576.1,1682.3 1628.0,1682.1 1628.0,1927.0 297.9,1917.5 298.9,1679.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[995.0,35.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0185368,43.7104968]}},{"type":"Feature","properties":{"resourceCoords":[443.0,1133.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0198971,43.7084801]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0019__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p19 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"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":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0019__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0019","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1301.7 -0.0,1863.9 999.9,1873.0 1008.7,1803.0 1184.3,1022.0 1328.5,620.8 1628.0,589.2 1628.0,-0.0 505.8,-0.0 193.1,1304.0 -0.0,1301.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0019__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[462.0,185.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0254782,43.7084257]}},{"type":"Feature","properties":{"resourceCoords":[193.0,1304.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0282716,43.7088699]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p2","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"5"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1369.6,1843.4 1246.2,1816.4 1246.2,1927.0 995.5,1927.0 993.5,1761.2 256.8,1600.0 250.7,59.6 1371.0,56.4 1369.6,1843.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[253.0,613.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0269077,43.7104353]}},{"type":"Feature","properties":{"resourceCoords":[253.0,1162.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0268966,43.7094342]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p20 [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":"1756.8"},{"label":"split_canvas_h","value":"3602.8"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 0.0,900.4 353.5,900.7 436.0,843.7 437.7,422.9 439.2,0.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020__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":[-98.03788034549417,43.70209634991146]}},{"type":"Feature","properties":{"resourceCoords":[439.2,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.03677785350878,43.702105123726156]}},{"type":"Feature","properties":{"resourceCoords":[439.2,900.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.03675294484177,43.700469309603065]}},{"type":"Feature","properties":{"resourceCoords":[0.0,900.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.03785543682716,43.700460535788366]}},{"type":"Feature","properties":{"resourceCoords":[394.2,53.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0368894,43.702008]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p20 [5]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"3410.0"},{"label":"split_canvas_y","value":"1240.4"},{"label":"split_canvas_w","value":"3102.0"},{"label":"split_canvas_h","value":"6467.6"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,1927.0 1628.0,312.0 1146.1,310.1 858.0,421.2 856.4,840.0 852.5,1927.0 1628.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020__5/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1259.2,1173.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0470561,43.7122911]}},{"type":"Feature","properties":{"resourceCoords":[1259.2,1723.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.047052,43.711328]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020__6/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p20 [6]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"1744.0"},{"label":"split_canvas_y","value":"1684.8"},{"label":"split_canvas_w","value":"1688.0"},{"label":"split_canvas_h","value":"1690.0"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020__6/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"809.1,421.4 770.2,421.5 437.7,422.9 436.2,782.4 474.5,782.6 474.2,843.4 762.5,840.8 762.4,806.1 807.0,805.8 809.1,421.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020__6/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[436.0,421.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.03700032766503,43.70341657359433]}},{"type":"Feature","properties":{"resourceCoords":[858.0,421.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.03488087455493,43.703441151770164]}},{"type":"Feature","properties":{"resourceCoords":[858.0,843.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.03484679614509,43.7019052976365]}},{"type":"Feature","properties":{"resourceCoords":[436.0,843.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.03696624925519,43.70188071946067]}},{"type":"Feature","properties":{"resourceCoords":[807.0,805.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.035106,43.7020403]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020__7/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p20 [7]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3360.0"},{"label":"split_canvas_w","value":"3425.6"},{"label":"split_canvas_h","value":"4348.0"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020__7/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"94.1,1927.0 852.5,1927.0 856.4,840.0 436.0,843.7 353.5,900.7 89.5,900.5 94.1,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0020__7/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[633.3,1193.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0087459,43.714591]}},{"type":"Feature","properties":{"resourceCoords":[90.0,1193.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0101377,43.7145774]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0021__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p21 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5690.0"},{"label":"split_canvas_w","value":"3664.4"},{"label":"split_canvas_h","value":"2018.0"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0021__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0021","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"744.1,1801.8 882.6,1800.2 876.5,1433.3 0.0,1422.5 0.0,1927.0 747.0,1927.0 744.1,1801.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0021__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[535.0,1804.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0429027,43.7113354]}},{"type":"Feature","properties":{"resourceCoords":[535.0,1527.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0428988,43.7123307]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0021__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p21 [2]","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"31"},{"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":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0021__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0021","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1271.2 0.0,1422.5 916.1,1433.8 915.9,1927.0 1128.0,1927.0 1421.0,1927.0 1564.5,1927.0 1566.0,1563.0 1511.4,1562.8 1515.0,1288.9 1569.3,1289.4 1584.7,0.0 0.0,0.0 -0.0,901.0 137.5,904.2 135.0,1272.8 -0.0,1271.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0021__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[680.0,1009.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0384234,43.7123594]}},{"type":"Feature","properties":{"resourceCoords":[1566.0,1563.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0338474,43.7103845]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0022__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p22 [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":"1491.2"},{"label":"split_canvas_h","value":"1428.4"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0022__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0022","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"337.0,337.6 336.8,231.1 372.8,231.2 372.8,0.0 0.0,0.0 -0.0,336.6 337.0,337.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0022__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[59.0,59.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0325967,43.7206987]}},{"type":"Feature","properties":{"resourceCoords":[335.8,59.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0312105,43.7207105]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0022__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p22 [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":"2685.2"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0022__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0022","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"182.0,652.3 1546.2,656.5 1547.8,0.0 728.6,0.0 729.0,105.0 396.5,104.5 396.4,0.0 372.8,0.0 372.8,355.8 0.0,357.1 -0.0,671.3 103.6,670.5 103.3,636.2 181.9,635.5 182.0,652.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0022__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[729.0,105.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0311907,43.7197048]}},{"type":"Feature","properties":{"resourceCoords":[182.0,652.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.033934,43.7176816]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0022__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p22 [3]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"27"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2634.4"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"5073.6"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0022__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0022","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1456.0,1837.4 1455.5,1755.5 1618.3,1755.2 1628.0,1659.5 1455.0,1660.4 1449.7,1151.2 1449.6,1108.2 1628.0,1107.2 1628.0,658.7 1628.0,658.6 1574.5,658.7 84.5,670.6 80.8,1840.5 1456.0,1837.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0022__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[627.0,1563.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0142915,43.713547]}},{"type":"Feature","properties":{"resourceCoords":[627.0,741.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0143252,43.7165493]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p23","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0023","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"77.1,82.8 1464.1,82.0 1463.8,0.0 1628.0,0.0 1628.0,1927.0 -0.0,1927.0 -0.0,1579.6 94.5,1580.1 94.2,1457.6 68.1,1457.7 77.1,82.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0023/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.01743077564426,43.71281666169112]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.00927393738851,43.71287446939361]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.00917994163021,43.70584611046661]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.01733677988595,43.70578830276412]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p24","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0024","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"334.1,189.4 1092.2,197.2 1094.3,0.0 1166.2,0.0 1161.1,607.0 1439.5,607.4 1438.5,721.6 1628.0,721.3 1628.0,1825.7 1155.7,1824.5 1155.0,1871.0 416.8,1870.4 416.6,1927.0 -0.0,1927.0 -0.0,1873.0 44.8,1872.7 47.7,1474.8 -0.0,1475.0 -0.0,-0.0 336.2,0.0 334.1,189.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1155.0,1871.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0295532,43.7021181]}},{"type":"Feature","properties":{"resourceCoords":[56.0,46.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0352131,43.7086463]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0025__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p25 [1]","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"44"},{"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":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0025__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0025","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1927.0 1003.4,1927.0 1002.9,1300.2 1628.0,1298.8 1628.0,0.0 740.2,0.0 739.6,46.6 -0.0,48.0 -0.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0025__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1269.0,939.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0268429,43.6989263]}},{"type":"Feature","properties":{"resourceCoords":[460.0,47.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0309493,43.7021014]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p3","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"262.7,1778.4 270.1,122.2 828.2,124.8 828.0,179.8 1391.2,180.9 1384.3,1782.3 262.7,1778.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[265.0,675.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0269591,43.7134537]}},{"type":"Feature","properties":{"resourceCoords":[265.0,1226.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.026939,43.7124503]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p4","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0004","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"823.8,1871.6 261.0,1870.0 261.2,67.2 1391.4,69.8 1391.7,1927.0 823.7,1927.0 823.8,1871.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1393.0,1318.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0241554,43.7154831]}},{"type":"Feature","properties":{"resourceCoords":[261.0,1870.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0269663,43.7144606]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0005","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"69.3,1872.5 61.0,551.0 -0.0,551.5 0.0,-0.0 1628.0,0.0 1628.0,756.1 1194.3,760.9 1199.5,1862.9 69.3,1872.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.02720276503022,43.72112127267441]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.02313557108619,43.72112602986648]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.02312783455952,43.71762210996553]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.02719502850356,43.71761735277346]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p6 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"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":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0006","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"90.9,124.5 84.7,1927.0 632.9,1927.0 633.6,1690.0 1628.0,1716.7 1628.0,1081.7 1628.0,647.2 1193.5,647.2 1193.5,128.8 1193.4,0.0 520.7,0.0 519.4,124.3 90.9,124.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[89.0,674.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0242037,43.7187369]}},{"type":"Feature","properties":{"resourceCoords":[1184.0,674.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0214351,43.7187614]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p7","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0007","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"135.1,1860.7 149.0,1310.0 149.6,880.0 -0.0,880.2 -0.0,0.0 159.2,0.0 158.6,34.0 1628.0,53.4 1628.0,1859.7 135.1,1860.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[701.0,1310.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0325108,43.7153863]}},{"type":"Feature","properties":{"resourceCoords":[149.0,1310.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.033896,43.7153669]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p8","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0008","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"256.8,1868.7 246.7,59.1 1533.5,66.6 1530.9,1865.0 256.8,1868.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[982.0,1314.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0283604,43.7154444]}},{"type":"Feature","properties":{"resourceCoords":[982.0,62.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0284037,43.7177111]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mitchell, South-Dakota | 1923 | sanborn08251_008 p9","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-23T04:13:47Z","modified":"2026-09-23T04:13:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0009","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"82.8,241.1 638.4,240.3 638.8,0.0 1398.6,25.9 1399.7,775.8 1628.0,775.6 1628.0,1891.5 85.6,1891.1 82.8,241.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184mm:g082511923:08251_1923-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1195.0,776.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0213875,43.7155046]}},{"type":"Feature","properties":{"resourceCoords":[85.0,776.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.0241554,43.7154831]}}]}}]}