{"id":"https://data.mapsnap.org/runs/v1.3/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 (2026-09-23)","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":"34"},{"label":"placed","value":"29"},{"label":"unplaced","value":"5"},{"label":"fit sources","value":"georef 19, georef-snap 9, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 15 panels"},{"label":"unplaced pages","value":"p1 (tier 3, 44.08744,-103.23849 +/-604m); p15__2 (tier 1, 44.07754,-103.24100 +/-100m); p18__1 (tier 1, 44.07761,-103.22852 +/-100m); p20__1 (tier 1, 44.07269,-103.23680 +/-100m); p24__1 (tier 1, 44.08585,-103.21277 +/-187m)"}],"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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"-0.0,72.7 1585.2,69.6 1590.0,1927.0 92.3,1927.0 91.9,1880.8 -0.0,1880.5 -0.0,72.7\" /></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":"6"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2580.8"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"5127.2"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"6.2,1272.0 98.0,1271.6 98.0,1851.0 1560.0,1851.0 1555.8,646.0 7.2,645.2 6.2,1272.0\" /></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":[-103.2195715,44.0798881]}},{"type":"Feature","properties":{"resourceCoords":[1560.0,1851.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.215625,44.0792484]}}]}},{"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":"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":"2584.0"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"0.0,0.0 -0.0,609.2 1545.0,610.0 1547.2,0.0 0.0,0.0\" /></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":[96.0,610.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2232901,44.0804807]}},{"type":"Feature","properties":{"resourceCoords":[1545.0,610.0],"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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"1425.0,1774.8 1420.5,1927.0 790.3,1848.5 -0.0,1832.6 21.4,1817.1 27.9,0.0 1628.0,0.0 1628.0,1796.8 1425.0,1774.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.21465334350955,44.08263817242112]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.2104660753983,44.08197268916228]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.21155492123555,44.07838713623632]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.2157421893468,44.079052619495165]}}]}},{"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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"-0.0,39.0 1582.5,66.3 1520.2,677.5 1547.0,679.6 1543.5,1512.4 1628.0,1521.4 1628.0,1927.0 -0.0,1927.0 -0.0,39.0\" /></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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"0.0,111.2 849.7,27.7 849.0,0.0 1478.9,0.0 1466.8,667.3 1628.0,654.6 1628.0,1927.0 0.0,1927.0 0.0,111.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0014/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.21484673114233,44.076333856587]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.21354607202629,44.07913173109339]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.20896851939389,44.0780179162482]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.21026917850993,44.07522004174181]}}]}},{"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":"6"},{"label":"intersections","value":"7"},{"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":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"1413.7,694.9 1440.8,0.0 1406.6,0.0 1405.0,39.5 0.0,-0.0 0.0,532.9 400.9,527.7 410.0,1159.5 188.4,1364.6 0.0,1364.2 -0.0,1927.0 1181.5,1927.0 1617.0,1852.3 1413.7,694.9\" /></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":[1516.0,1283.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2379404,44.0759166]}},{"type":"Feature","properties":{"resourceCoords":[888.0,17.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2390018,44.0785365]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0016/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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"165.2,1895.9 34.6,1288.0 35.4,562.9 -0.0,564.3 1.1,54.1 35.9,54.1 36.0,15.2 1499.2,16.6 1494.4,1300.3 1562.0,1590.2 165.2,1895.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0016/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23730949768898,44.07941302656555]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23323770783844,44.07876430626641]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23429907086019,44.075277454228484]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23837086071073,44.07592617452762]}}]}},{"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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"877.0,1869.5 573.1,1927.0 212.3,1927.0 55.1,1160.4 85.5,0.0 1504.3,0.0 1472.8,1042.3 1628.0,1046.1 1628.0,1927.0 889.1,1927.0 877.0,1869.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23383112621862,44.07870121472596]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.22953414750657,44.078089833306]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23053440793684,44.07441009462652]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23483138664889,44.07502147604648]}}]}},{"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":"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":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"1628.0,1927.0 1628.0,1344.3 1541.8,877.1 1547.6,76.2 1628.0,78.0 1628.0,42.4 88.1,15.3 67.6,1129.9 229.1,1132.5 233.1,1487.7 396.8,1487.9 397.0,1927.0 1628.0,1927.0\" /></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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"-0.0,1927.0 -0.0,1798.2 232.2,1793.1 221.3,1228.0 128.9,804.1 119.2,0.0 1561.5,0.0 1561.8,44.9 1628.0,44.7 1628.0,1927.0 -0.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0019/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.22649075049839,44.07756804222461]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.22228709232574,44.0768719958016]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.22342584542588,44.07327209399103]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.22762950359852,44.07396814041404]}}]}},{"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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"1562.9,1877.2 82.4,1927.0 74.5,110.8 809.6,104.2 809.0,0.0 1550.2,0.0 1562.9,1877.2\" /></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":"5"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"1611.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4900.8"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"1616.3,1927.0 1620.4,1175.0 1021.0,0.0 402.8,-0.0 404.3,346.6 656.5,344.6 659.5,623.8 1067.3,623.9 1072.6,1927.0 1616.3,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0020__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1020.4,590.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2379496,44.0737352]}},{"type":"Feature","properties":{"resourceCoords":[1020.4,1173.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2379495,44.0726775]}}]}},{"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":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1378.4"},{"label":"split_canvas_w","value":"4290.4"},{"label":"split_canvas_h","value":"6329.6"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"81.0,387.6 83.8,1214.2 810.2,1215.4 813.0,1927.0 1072.6,1927.0 1067.3,623.9 659.5,623.8 657.0,385.8 81.0,387.6\" /></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":[81.0,387.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2342725,44.0726733]}},{"type":"Feature","properties":{"resourceCoords":[637.8,387.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.234278,44.0716277]}}]}},{"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":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"68.7,1852.4 80.0,63.0 1533.3,71.2 1534.0,607.9 1628.0,626.9 1628.0,669.6 1531.5,669.4 1528.0,1861.0 68.7,1852.4\" /></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":[1528.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2342725,44.0726733]}},{"type":"Feature","properties":{"resourceCoords":[80.0,63.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2379404,44.0759166]}}]}},{"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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"729.5,78.0 1485.5,228.3 1510.4,103.5 1628.0,128.0 1628.0,1927.0 31.7,1927.0 34.8,0.0 729.0,16.6 729.5,78.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0022/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23436637450764,44.07483011500997]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23016837206029,44.07483665041296]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23015768034561,44.071241456437924]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23435568279297,44.071234921034936]}}]}},{"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":"7"},{"label":"intersections","value":"13"},{"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":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"719.9,1927.0 1058.2,1927.0 1068.8,1882.0 1463.4,1885.1 1456.0,1925.5 1473.0,1927.0 1508.3,1790.5 1481.7,1784.2 1500.7,1680.0 1584.5,1337.2 1563.2,1336.3 1572.7,1283.9 1628.0,1286.1 1628.0,0.0 435.3,0.0 424.2,0.0 420.0,159.8 357.1,610.5 0.0,608.1 -0.0,1298.5 89.3,1299.4 72.5,1927.0 254.4,1927.0 275.5,1847.3 719.9,1927.0\" /></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":[-103.2360499,44.0842287]}},{"type":"Feature","properties":{"resourceCoords":[34.0,1322.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2420345,44.084157]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0023__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 p23 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1696.8"},{"label":"split_canvas_h","value":"2442.0"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0023__2/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=\"398.7,312.4 415.9,189.4 402.6,0.0 -0.0,45.2 0.0,608.1 357.1,610.5 387.5,392.8 392.3,313.2 398.7,312.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0023__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23693160519538,44.084930071223454]}},{"type":"Feature","properties":{"resourceCoords":[424.2,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23583853756804,44.084803783037366]}},{"type":"Feature","properties":{"resourceCoords":[424.2,610.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.2360901142955,44.08366434686725]}},{"type":"Feature","properties":{"resourceCoords":[0.0,610.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23718318192283,44.08379063505334]}}]}},{"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":"6"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"1324.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5187.2"},{"label":"split_canvas_h","value":"2349.2"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"1555.2,0.0 331.6,0.0 331.2,290.7 1435.2,543.2 1555.2,0.0\" /></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":[839.1,22.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2117327,44.084847]}},{"type":"Feature","properties":{"resourceCoords":[1330.0,22.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2117333,44.0830021]}}]}},{"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":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2975.6"},{"label":"split_canvas_w","value":"1448.0"},{"label":"split_canvas_h","value":"4732.4"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"0.0,1927.0 330.6,1927.0 351.4,1231.3 274.8,1232.6 261.7,743.9 0.0,748.8 0.0,1927.0\" /></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":[47.0,1259.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2434017,44.0841487]}},{"type":"Feature","properties":{"resourceCoords":[47.0,1516.3],"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":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"1322.4"},{"label":"split_canvas_y","value":"3508.8"},{"label":"split_canvas_w","value":"5189.6"},{"label":"split_canvas_h","value":"4199.2"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"1628.0,889.3 370.1,888.0 362.0,877.2 361.6,888.0 330.6,1927.0 918.0,1927.0 1155.0,1927.0 1628.0,1927.0 1628.0,889.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0024__4/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1190.2,1358.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2056505,44.0758386]}},{"type":"Feature","properties":{"resourceCoords":[382.6,1358.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2090199,44.0766437]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0025/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","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0025/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=\"-0.0,1927.0 -0.0,-0.0 1628.0,0.0 1628.0,1927.0 -0.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0025/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23015545024926,44.096465029952135]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.22179125645764,44.096439833317966]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.22183249116979,44.089279087170475]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23019668496141,44.089304283804644]}}]}},{"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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"1541.2,111.0 1533.0,1875.0 78.1,1868.9 83.3,0.0 811.4,0.0 810.1,110.2 1541.2,111.0\" /></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":"9"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"1587.9,1747.6 1585.6,1786.5 1581.7,1853.2 376.1,1784.2 40.2,1835.2 46.6,1782.4 53.0,1678.0 55.1,1640.6 -0.0,1637.6 -0.0,1344.2 42.7,714.2 -0.0,720.3 -0.0,613.0 110.5,597.4 1.9,0.0 1628.0,0.0 1628.0,1750.2 1587.9,1747.6\" /></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_1923-0005/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 p5","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0005","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 1587.4,0.0 1590.4,586.7 -0.0,589.4 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[803.0,1225.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2173521,44.080722]}},{"type":"Feature","properties":{"resourceCoords":[803.0,1830.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2177136,44.07958]}}]}},{"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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"1434.4,1823.6 87.0,1824.0 87.7,1715.6 -0.0,1716.1 0.0,0.0 1628.0,0.0 1628.0,1216.2 1431.7,1217.1 1434.4,1823.6\" /></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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"-0.0,52.0 376.1,0.0 1542.1,0.0 1542.4,78.4 1628.0,78.6 1628.0,1846.4 172.3,1864.9 174.8,1927.0 -0.0,1927.0 -0.0,52.0\" /></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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"116.5,1927.0 81.8,1927.0 86.4,703.5 -0.0,703.3 -0.0,377.6 765.8,202.4 786.7,282.7 804.9,191.4 1133.7,123.6 1589.7,126.3 1574.4,1890.8 116.6,1888.3 116.5,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23648065325554,44.08284779819099]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23239270662903,44.08219906926982]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.23345414484008,44.07869858293193]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.2375420914666,44.0793473118531]}}]}},{"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"}],"created":"2026-09-23T04:21:46Z","modified":"2026-09-23T04:21:46Z","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=\"79.3,105.3 1484.8,102.5 1479.4,1927.0 1273.5,1927.0 157.2,1923.5 156.6,1887.6 75.5,1887.7 79.3,105.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd418m:g4184m:g4184rm:g082581923:08258_1923-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.22529164910364,44.08101152770568]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.22123883564498,44.08035021538725]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.22232082925625,44.07687970651572]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1927.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-103.2263736427149,44.07754101883415]}}]}}]}