{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08258_008.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Rapid City, South-Dakota | 1923 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"34"},{"label":"placed","value":"28"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef-snap 15, georef 11, snap:1 1, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"7 sheet(s) cut into 17 panels"},{"label":"unplaced pages","value":"p15__2 (tier 1, 44.07866,-103.23842 +/-111m); p18__1 (tier 1, 44.07582,-103.22713 +/-100m); p20__1 (tier 1, 44.07200,-103.23684 +/-100m); p23__2 (tier 1, 44.08430,-103.23648 +/-100m); p24__1 (tier 1, 44.07508,-103.19974 +/-187m); p5 (tier 1, 44.08121,-103.21717 +/-272m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p10","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0010","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"585.1,70.8 822.6,70.3 1557.8,73.2 1585.2,73.0 1586.8,656.8 1615.7,656.6 1620.6,1249.1 1588.4,1249.1 1589.8,1815.5 1610.0,1815.5 1486.5,1885.3 91.3,1868.4 96.8,1836.9 80.0,1249.7 84.0,1249.7 94.3,662.7 87.1,662.7 87.0,72.0 585.1,70.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1558.0,657.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.218048,44.0785192]}},{"type":"Feature","properties":{"resourceCoords":[87.0,72.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2214328,44.0801881]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0011__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p11 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.67"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2570.4"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"5137.6"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0011__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0011","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"93.3,1842.9 798.7,1848.7 1163.3,1847.2 1590.1,1847.8 1593.6,1311.2 1590.1,973.8 1589.8,681.1 138.8,671.4 58.1,724.8 61.2,1250.0 78.5,1842.8 93.3,1842.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0011__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[98.0,1851.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.21956392532599,44.07987068775101]}},{"type":"Feature","properties":{"resourceCoords":[1560.0,1851.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.21570629460805,44.079254878996345]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0011__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p11 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.78"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"2601.6"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0011__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0011","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1310.8,609.8 1529.8,610.3 1512.2,1.0 1511.4,1.0 1461.8,70.4 153.9,45.9 148.0,4.5 107.3,610.4 155.8,610.2 819.4,608.6 1310.8,609.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0011__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[96.0,610.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2232901,44.0804807]}},{"type":"Feature","properties":{"resourceCoords":[1545.0,610.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2195715,44.0798881]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.58"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0012","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1104.5,1891.3 928.6,1868.6 794.0,1851.2 636.0,1830.8 451.5,1818.0 25.4,1818.0 30.5,1269.3 27.8,924.1 28.2,624.8 38.6,624.9 81.1,288.4 70.3,208.4 1076.0,15.6 1477.6,25.5 1523.2,65.2 1568.5,42.0 1608.2,156.8 1589.9,1854.5 1420.9,1898.5 1419.7,1926.0 1371.8,1926.0 1104.5,1891.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1413.0,1519.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2118720576653,44.07923825387116]}},{"type":"Feature","properties":{"resourceCoords":[72.0,579.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2148025756303,44.08152817158545]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p13","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0013","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"20.2,1786.0 28.3,1781.4 98.6,1862.4 290.0,1886.5 1563.8,1891.4 1586.7,1554.3 1559.4,1270.9 1544.1,1269.8 1541.5,975.8 1547.5,679.7 1575.2,681.8 1624.6,71.4 1585.8,66.6 1424.1,46.5 1235.4,34.1 799.8,36.0 353.6,36.2 1.0,38.2 1.0,623.9 29.0,623.7 32.3,1217.9 1.0,1217.8 1.0,1785.9 20.2,1786.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[821.0,1219.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2162399,44.0770955]}},{"type":"Feature","properties":{"resourceCoords":[1542.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2147807,44.0756481]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.82"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0014","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"247.9,105.4 1.0,155.5 1.0,155.8 34.0,160.9 46.5,1882.9 1057.5,1889.2 1142.5,1907.9 1148.7,1926.0 1541.1,1926.0 1598.6,1921.2 1586.6,1892.3 1626.6,1098.5 1562.0,836.5 1570.2,835.8 1504.8,664.1 1476.0,665.9 1470.4,624.0 1476.3,332.4 1480.0,145.9 1482.0,43.4 852.3,58.3 851.5,29.8 548.0,55.4 247.5,89.7 247.9,105.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[880.0,738.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.21239191097668,44.07741878290384]}},{"type":"Feature","properties":{"resourceCoords":[880.0,1444.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.21070993094045,44.077011857623155]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0015__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p15 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0015__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0015","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1627.0,1733.6 1522.8,1269.3 1396.7,714.7 1383.7,578.3 1383.3,63.4 1382.8,1.0 314.9,1.0 247.1,1.6 247.4,31.9 72.2,37.8 55.2,528.0 369.8,529.8 399.6,529.6 399.6,530.0 402.9,530.0 413.2,704.9 500.8,862.2 429.8,1166.5 286.7,1284.1 200.5,1366.5 69.0,1462.9 41.5,1860.7 671.0,1835.3 903.4,1915.2 904.5,1926.0 1280.2,1926.0 1602.9,1852.9 1627.0,1847.3 1627.0,1733.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0015__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[231.0,17.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.24049838653974,44.07874195360707]}},{"type":"Feature","properties":{"resourceCoords":[1516.0,1283.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.23796552821034,44.07589452387794]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0016","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"46.0,1336.6 33.8,1198.2 37.0,675.5 37.0,605.0 2.1,604.8 2.6,12.7 639.9,10.6 838.9,13.1 1496.4,15.8 1496.2,85.6 1491.3,1206.0 1494.2,1304.0 1562.2,1595.0 922.2,1735.7 651.4,1797.9 170.1,1900.4 46.0,1336.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[691.0,1203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.236247178056,44.07696634418497]}},{"type":"Feature","properties":{"resourceCoords":[1520.0,44.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.23352535331814,44.07872537837772]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.82"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0017","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1470.0,1056.1 1499.5,41.5 1500.5,1.0 87.2,1.0 87.2,1.4 57.7,1066.7 58.3,1159.8 116.5,1438.0 215.2,1926.0 592.2,1926.0 830.1,1880.6 877.8,1872.0 889.1,1926.0 930.8,1926.0 936.1,1926.0 931.5,1904.4 1627.0,1743.3 1627.0,1407.3 1470.0,1056.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[51.0,1062.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.23425643735526,44.076653744500554]}},{"type":"Feature","properties":{"resourceCoords":[1520.0,21.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.22982070852261,44.078086529347296]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0018__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p18 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.94"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0018__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0018","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"67.4,1142.9 226.4,1489.0 291.8,1489.0 398.0,1489.0 398.0,1692.8 398.0,1877.6 1399.8,1900.6 1406.6,1926.0 1442.5,1926.0 1558.1,1598.9 1627.0,1585.6 1627.0,1492.4 1627.0,1339.8 1553.2,983.5 1541.7,905.3 1538.1,804.9 1544.8,336.1 1548.0,41.0 820.2,30.0 88.1,15.3 87.3,83.2 67.4,1142.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0018__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[78.0,607.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.230184,44.0771054]}},{"type":"Feature","properties":{"resourceCoords":[1548.0,41.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2261635,44.0775811]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.67"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0019","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"123.5,250.0 126.3,705.7 131.8,803.3 144.5,879.0 223.3,1223.9 228.2,1462.9 161.4,1477.1 55.5,1797.4 21.0,1799.1 47.2,1889.0 188.9,1907.3 1593.5,1875.8 1603.4,208.5 1552.7,176.7 1526.0,1.0 121.2,1.0 123.5,250.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[840.0,1381.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.22513862094574,44.07463265527398]}},{"type":"Feature","properties":{"resourceCoords":[129.0,1077.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.22680251373673,44.07550188245673]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p2","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0002","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"855.5,1925.4 1563.2,1901.8 1562.9,1877.2 1555.7,1285.5 1552.0,693.0 1552.8,394.2 1550.7,162.8 1550.0,102.2 1550.3,58.5 825.6,72.8 819.2,1.0 809.0,1.0 809.5,104.2 137.2,108.3 74.5,110.8 73.4,630.5 74.9,997.4 81.4,1586.7 82.0,1883.0 82.3,1926.0 837.6,1926.0 855.5,1925.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1552.0,693.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2291875,44.0803184]}},{"type":"Feature","properties":{"resourceCoords":[82.0,1883.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2335689,44.0787856]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0020__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p20 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1616.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4896.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0020__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0020","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1160.9,1.0 812.0,1.0 807.8,36.4 533.4,109.4 533.0,271.3 696.0,323.2 739.8,603.0 910.5,625.0 1066.8,625.0 1088.1,647.9 1072.6,1344.2 1072.6,1344.8 1152.2,1818.2 1537.6,1870.6 1525.0,1926.0 1572.6,1926.0 1562.4,1177.2 1585.9,1177.3 1589.0,9.7 1538.9,9.8 1193.8,8.5 1160.9,1.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0020__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[404.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.24095013845465,44.07483080523819]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.2378493401512,44.07483571705017]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23783865231836,44.07130367233744]}},{"type":"Feature","properties":{"resourceCoords":[404.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.24093945062182,44.07129876052547]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0020__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p20 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1392.0"},{"label":"split_canvas_w","value":"4309.2"},{"label":"split_canvas_h","value":"6316.0"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0020__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0020","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"62.7,1817.8 62.5,1841.0 809.7,1832.1 810.6,1879.4 886.5,1896.5 1041.0,1816.3 1067.2,678.3 1023.4,626.7 663.5,625.4 663.3,625.0 660.4,625.0 660.2,625.0 660.1,618.6 619.8,537.1 627.6,390.3 639.5,389.4 639.5,384.2 70.3,379.9 67.5,841.1 67.9,1130.6 62.7,1817.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0020__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[81.0,387.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.23429048816675,44.07265354654185]}},{"type":"Feature","properties":{"resourceCoords":[638.2,387.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.23428522214586,44.07163016668757]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p21","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0021","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"71.5,677.7 47.8,677.8 72.9,563.2 74.7,71.5 575.7,75.3 858.8,73.0 1525.9,73.7 1528.8,607.8 1627.0,627.0 1627.0,682.8 1594.2,682.7 1529.2,682.3 1528.0,1861.0 1060.5,1859.8 767.2,1861.2 70.7,1858.4 71.5,677.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1528.0,1279.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2342728,44.0737283]}},{"type":"Feature","properties":{"resourceCoords":[1528.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2342725,44.0726733]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p22","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0022","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"37.0,1156.8 33.6,1718.8 28.5,1718.8 41.8,1902.9 1593.8,1884.3 1583.0,64.2 1627.0,74.5 1627.0,1.0 1529.5,1.0 1522.8,34.4 777.4,57.9 777.7,81.0 729.6,71.4 729.0,13.9 678.5,13.0 103.5,8.7 40.3,8.2 37.0,1156.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[58.0,1173.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.23421790383193,44.07264317810188]}},{"type":"Feature","properties":{"resourceCoords":[58.0,1725.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.23421496727315,44.07161629458988]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0023__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p23 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.28"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0023__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0023","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"438.0,1913.8 473.8,1914.7 530.7,1926.0 1086.0,1926.0 1107.2,1907.0 1457.2,1897.1 1514.7,1893.5 1521.7,1867.5 1575.9,1600.1 1626.8,1357.8 1627.0,1331.0 1596.3,1331.0 1607.9,1277.1 1612.3,1277.1 1627.0,1144.8 1627.0,1033.0 1627.0,1019.0 1606.5,1023.6 1626.4,903.1 1561.9,345.7 1568.8,143.0 1536.9,53.7 1499.4,54.5 1500.5,107.0 1410.6,108.9 1391.3,83.0 1380.5,105.8 1196.6,98.5 1140.0,84.7 1128.0,47.5 1003.6,16.4 493.8,27.3 430.9,69.9 418.8,161.3 418.7,167.7 403.9,273.6 359.9,604.0 356.5,611.1 323.0,610.9 303.6,610.7 53.1,640.6 39.5,880.9 1.0,882.5 1.0,899.4 13.3,915.6 31.4,1351.9 28.2,1352.0 26.6,1879.5 308.9,1899.0 307.7,1904.9 438.0,1913.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0023__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1203.0,1322.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2360642731099,44.08425903027883]}},{"type":"Feature","properties":{"resourceCoords":[34.0,1609.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.24194840112176,44.08331693093687]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0024__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p24 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.60"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1332.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5180.0"},{"label":"split_canvas_h","value":"2353.2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0024__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0024","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1549.2,547.1 1552.7,32.2 1551.0,39.7 1418.4,13.7 387.4,44.7 395.3,266.0 518.0,331.4 862.2,410.4 1062.4,424.3 1414.5,538.8 1549.2,547.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0024__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[839.0,22.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.21176260201648,44.08486089839908]}},{"type":"Feature","properties":{"resourceCoords":[1330.0,22.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.21181336171692,44.08300548643638]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0024__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p24 [3]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.21"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2998.8"},{"label":"split_canvas_w","value":"1468.8"},{"label":"split_canvas_h","value":"4709.2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0024__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0024","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"315.0,814.5 291.5,782.8 171.7,786.6 93.1,830.4 58.2,927.6 35.4,1875.1 93.1,1899.6 261.9,1894.3 297.5,1868.8 310.6,1736.0 317.2,1736.5 324.5,1231.9 327.5,1231.8 315.0,814.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0024__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[47.0,1259.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2434017,44.0841487]}},{"type":"Feature","properties":{"resourceCoords":[47.0,1516.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2434152,44.083183]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0024__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p24 [4]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.02"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1330.8"},{"label":"split_canvas_y","value":"3539.2"},{"label":"split_canvas_w","value":"5181.2"},{"label":"split_canvas_h","value":"4168.8"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0024__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0024","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"369.4,996.5 362.4,1030.7 356.2,1217.4 369.6,1216.9 358.1,1925.1 1009.0,1923.1 1209.2,1888.4 1345.2,1898.6 1365.5,1924.7 1608.2,1923.0 1609.0,1909.0 1609.4,1909.0 1597.4,904.1 399.6,892.6 407.4,992.3 369.4,996.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0024__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[332.7,884.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.20915379273974,44.07836344322919]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,884.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.2028765065657,44.078188221158065]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.20307141801815,44.07453326650145]}},{"type":"Feature","properties":{"resourceCoords":[332.7,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.2093487041922,44.074708488572576]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_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":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p25 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0025__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0025","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1616.2,1154.8 1627.0,1144.3 1627.0,1052.7 1625.5,200.9 1577.6,70.7 1537.5,41.9 1476.1,67.6 1446.9,35.1 1370.8,46.4 1334.4,21.2 790.7,31.5 765.7,100.5 761.2,688.4 761.4,711.5 762.9,924.7 759.4,927.2 30.8,945.7 39.6,1884.7 123.2,1909.6 1272.4,1910.5 1573.3,1901.5 1600.2,1888.5 1608.0,1921.5 1608.0,1910.0 1617.8,1907.9 1617.8,1631.0 1617.0,1274.5 1616.2,1154.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0025__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1062.0,929.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.22471832574455,44.09302131438228]}},{"type":"Feature","properties":{"resourceCoords":[1346.0,627.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.22323831036995,44.09413912654306]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0025__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p25 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3051.6"},{"label":"split_canvas_h","value":"3747.6"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0025__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0025","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"25.4,132.8 29.8,495.7 32.5,777.6 24.0,797.1 33.6,918.5 317.9,928.9 483.6,900.5 760.8,922.2 732.3,22.0 34.7,21.5 23.4,10.9 25.4,132.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0025__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[286.9,143.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.22052282336215,44.0916725513333]}},{"type":"Feature","properties":{"resourceCoords":[364.9,873.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2201825449401,44.088996921362856]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p3","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0003","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1533.0,1875.0 1541.3,1287.8 1538.2,698.6 1541.2,111.0 810.2,110.2 811.4,1.0 768.9,1.0 767.9,56.6 82.9,63.6 82.1,107.0 82.2,167.2 82.2,396.9 78.5,693.5 76.5,1281.6 78.0,1868.9 807.7,1873.8 1533.0,1875.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[809.0,691.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2273346,44.0800286]}},{"type":"Feature","properties":{"resourceCoords":[1533.0,1875.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2261635,44.0775811]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p4","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.31"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0004","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"376.1,1784.2 191.5,1802.3 40.2,1835.2 46.6,1782.4 78.0,1245.3 109.8,758.1 113.0,704.3 42.8,714.2 50.4,605.9 59.0,604.6 50.8,342.2 15.8,96.7 188.7,31.5 657.9,14.2 1494.1,41.4 1556.0,98.7 1598.0,1748.3 1587.8,1747.6 1581.6,1853.2 900.7,1813.6 837.0,1812.0 376.1,1784.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[85.0,601.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2339434,44.0843877]}},{"type":"Feature","properties":{"resourceCoords":[837.0,1812.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2325585,44.0819848]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p6","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.66"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0006","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"61.8,396.7 87.5,91.9 154.4,33.0 1462.0,43.0 1558.3,210.8 1594.6,209.8 1536.8,244.8 1613.0,387.9 1544.6,986.9 1579.0,1220.9 1541.3,1824.0 1530.0,1824.0 805.8,1821.2 87.0,1824.0 87.7,1715.6 45.9,1715.8 61.8,396.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[87.0,1824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.227006,44.0810856]}},{"type":"Feature","properties":{"resourceCoords":[1530.0,1824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2232901,44.0804807]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p7","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0007","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"345.5,1882.2 521.5,1877.3 521.4,1846.9 694.3,1846.3 695.3,1846.3 1092.0,1848.7 1627.0,1851.9 1627.0,1187.8 1627.0,78.5 1626.5,78.5 1560.3,1.0 370.4,1.0 308.0,11.9 58.1,44.2 39.3,1852.6 346.1,1866.1 345.5,1882.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1092.0,1256.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2386709,44.0796086]}},{"type":"Feature","properties":{"resourceCoords":[1092.0,1845.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2390018,44.0785365]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0008","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"88.0,701.4 86.0,1889.0 720.2,1888.0 918.4,1890.8 1572.8,1894.6 1575.7,1598.8 1576.1,1010.5 1578.9,644.3 1586.1,125.5 1131.8,121.9 951.4,149.2 804.3,189.3 696.2,217.6 33.6,367.6 1.0,410.6 1.0,599.5 87.5,701.4 88.0,701.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1554.0,1310.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.23329351791085,44.07985197778604]}},{"type":"Feature","properties":{"resourceCoords":[1554.0,98.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.23262424472013,44.082047318587136]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1923 | sanborn08258_008 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T16:36:29Z","modified":"2026-10-19T16:36:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0009","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"79.9,1888.5 85.8,1293.7 80.0,697.1 80.6,102.0 826.7,105.5 888.0,105.2 1568.5,101.0 1568.0,698.7 1575.3,698.6 1564.2,1292.5 1560.3,1292.5 1576.7,1886.7 1571.1,1918.5 1541.7,1926.0 80.2,1926.0 79.9,1888.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[826.0,1877.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.22429158686985,44.07729919947445]}},{"type":"Feature","properties":{"resourceCoords":[1549.0,697.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.22181791047457,44.079125483376714]}}]}}]}