{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08877_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Ogden, Utah | 1950 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"146"},{"label":"placed","value":"110"},{"label":"unplaced","value":"36"},{"label":"fit sources","value":"georef 55, georef-snap 54, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"28 sheet(s) cut into 73 panels"},{"label":"unplaced pages","value":"p0__1 (tier 1, 41.25256,-111.96667 +/-100m); p10__1 (tier 1, 41.23125,-111.96454 +/-143m); p10__2 (tier 1, 41.23138,-111.96578 +/-126m); p1__1 (tier 1, 41.21967,-111.96546 +/-205m); p1__2 (tier 2, 41.23042,-111.95935 +/-100m); p20__1 (tier 1, 41.22193,-111.97974 +/-213m); p21__1 (tier 1, 41.22693,-111.97696 +/-100m); p22 (tier 1, 41.22437,-111.98097 +/-260m); p2__2 (tier 2, 41.22259,-111.94895 +/-868m); p2__3 (tier 1, 41.23150,-111.97381 +/-130m); p4__2 (tier 2, 41.23988,-111.96831 +/-547m); p4__4 (tier 1, 41.23808,-111.96124 +/-100m); p4__5 (tier 1, 41.24788,-111.96468 +/-100m); p51__2 (tier 1, 41.22055,-111.97083 +/-100m); p64__1 (tier 3, 41.21338,-111.98408 +/-457m); p64__2 (tier 1, 41.21376,-111.98183 +/-215m); p64__3 (tier 1, 41.21288,-111.98228 +/-219m); p65__1 (tier 1, 41.21529,-111.97879 +/-100m); p6__1 (tier 2, 41.23218,-111.97127 +/-195m); p6__3 (tier 1, 41.23343,-111.97012 +/-100m); p6__4 (tier 1, 41.23356,-111.97027 +/-100m); p7__2 (tier 2, 41.22487,-111.96788 +/-1685m); p84__2 (tier 1, 41.20793,-111.97841 +/-100m); p91__1 (tier 2, 41.20347,-111.97765 +/-100m); p92__1 (tier 3, 41.22291,-112.00202 +/-457m); p92__2 (tier 1, 41.22304,-112.00032 +/-100m); p92__3 (tier 1, 41.22181,-112.00181 +/-100m); p93__1 (tier 4, 41.22134,-111.96636 +/-4210m); p93__2 (tier 4, 41.22134,-111.96636 +/-4210m); p93__3 (tier 4, 41.22134,-111.96636 +/-4210m); p93__4 (tier 4, 41.22134,-111.96636 +/-4210m); p93__5 (tier 4, 41.22134,-111.96636 +/-4210m); p94__1 (tier 1, 41.22414,-111.99150 +/-163m); p94__2 (tier 1, 41.22489,-111.99016 +/-222m); p95__1 (tier 1, 41.23674,-111.97850 +/-107m); p95__2 (tier 1, 41.23696,-111.97601 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0100/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p100","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0100/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0100","type":"ImageService3","width":1618,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"43.5,914.3 78.5,108.2 138.1,84.1 447.3,117.3 763.0,109.0 1295.1,38.4 1502.8,74.3 1549.1,118.2 1558.5,189.4 1544.1,780.5 1599.5,1170.3 1554.9,1329.5 1592.4,1610.7 1576.0,1840.6 1513.0,1877.2 999.1,1881.3 208.5,1894.2 83.5,1446.7 61.2,1446.7 43.5,914.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0100/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1003.0,1877.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96531956736744,41.24924529636726]}},{"type":"Feature","properties":{"resourceCoords":[600.0,155.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96702412080664,41.25545791022667]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0010__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p10 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2714.0"},{"label":"split_canvas_w","value":"6520.0"},{"label":"split_canvas_h","value":"5082.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0010__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0010","type":"ImageService3","width":1630,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1157.1,1849.5 1157.2,1839.9 1611.8,1807.9 1613.0,881.5 1611.0,881.4 1611.0,834.5 1612.0,834.4 1613.1,778.8 1556.5,779.0 1541.5,792.0 1347.2,810.3 77.8,792.4 75.9,782.6 41.4,782.8 38.6,1831.3 38.5,1849.7 1157.1,1849.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0010__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[65.0,791.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9673489948252,41.231058330462574]}},{"type":"Feature","properties":{"resourceCoords":[1611.0,791.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9635036740703,41.23100056185207]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0011","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1636.0,995.5 1636.0,47.2 1624.2,34.9 1593.7,35.5 711.6,43.7 465.7,43.7 466.1,72.1 1.0,126.5 1.0,161.3 41.0,162.2 126.7,701.0 54.9,1068.1 106.6,1088.8 57.0,1155.7 74.1,1571.9 125.9,1599.9 144.8,1782.2 416.3,1827.0 478.1,1897.7 477.8,1840.4 581.8,1842.2 582.0,1840.1 1541.4,1838.0 1605.3,1837.4 1600.1,1034.5 1636.0,995.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[464.0,1170.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96185188511896,41.23102053544892]}},{"type":"Feature","properties":{"resourceCoords":[1584.0,1835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96354831874241,41.22898234234626]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p12","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0012","type":"ImageService3","width":1630,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1556.0,1237.0 1558.9,1488.7 1564.0,1831.2 1107.9,1838.0 980.7,1838.7 981.0,1853.4 740.1,1883.0 740.2,1900.9 156.3,1892.4 60.4,1846.1 36.2,1536.8 86.3,1180.0 34.1,686.4 85.2,102.8 341.0,61.3 962.4,57.8 962.7,80.6 993.3,80.2 1215.5,77.5 1251.5,77.2 1544.1,74.3 1548.3,395.6 1549.3,626.5 1550.8,690.9 1552.5,989.6 1556.0,1237.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[380.0,381.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9520885,41.2329603]}},{"type":"Feature","properties":{"resourceCoords":[1556.0,1237.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9563127,41.2288531]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.74"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0013","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"650.5,1905.4 65.5,1880.0 55.6,1856.2 45.7,1316.5 57.0,1271.9 49.4,760.7 187.8,759.0 62.2,282.7 97.4,51.0 1288.7,16.4 1603.3,74.3 1606.3,67.4 1592.8,739.0 1597.7,739.0 1612.5,1823.3 1611.8,1895.9 934.6,1896.2 658.2,1898.3 658.0,1927.1 656.2,1927.2 650.5,1905.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[922.0,1872.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97876736752579,41.22709587422725]}},{"type":"Feature","properties":{"resourceCoords":[922.0,78.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97864190439968,41.23034329089843]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0014","type":"ImageService3","width":1630,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"36.8,1893.7 37.8,1823.5 28.4,775.0 23.6,775.0 39.8,125.6 62.3,73.7 488.2,130.9 488.1,112.7 1604.8,153.2 1606.3,288.7 1611.0,694.7 1611.4,758.6 1605.6,758.6 1597.2,946.1 1562.0,948.0 1561.0,994.0 1595.2,992.8 1555.7,1882.3 1552.8,1882.3 501.2,1890.2 36.8,1893.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[58.0,1890.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97705587282725,41.227022294840026]}},{"type":"Feature","properties":{"resourceCoords":[1591.0,1890.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97323975555692,41.22695231879782]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p15","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0015","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"195.4,1531.2 240.2,625.4 205.4,626.5 206.7,579.6 242.6,577.9 252.0,386.9 258.0,387.0 258.0,365.6 1413.7,323.4 1414.0,386.6 1416.0,1074.9 1415.0,1529.0 882.0,1530.0 251.8,1767.3 251.8,1644.6 257.1,1531.2 219.4,1531.2 195.4,1531.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[258.0,387.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9731202,41.2290695]}},{"type":"Feature","properties":{"resourceCoords":[1415.0,1529.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9703463,41.2269291]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0016","type":"ImageService3","width":1630,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"820.9,1514.7 223.8,1514.6 227.3,1064.6 229.2,382.4 1374.2,385.9 1375.8,1249.0 1375.3,1519.3 820.9,1514.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1382.0,1049.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96747363010779,41.22776329780016]}},{"type":"Feature","properties":{"resourceCoords":[213.0,376.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97033429582785,41.229041619710806]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0017","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1307.0,1537.3 1097.4,1539.7 843.6,1542.6 537.0,1546.1 296.1,1549.5 238.1,1550.3 234.3,1276.5 219.7,402.5 219.5,355.9 1362.0,345.5 1362.1,389.2 1374.7,1536.5 1307.0,1537.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[225.0,391.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96745653647963,41.22901433606616]}},{"type":"Feature","properties":{"resourceCoords":[1381.0,391.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96464217284665,41.228953418585306]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p18","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0018","type":"ImageService3","width":1630,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"261.3,348.4 724.5,315.9 724.5,336.2 724.9,400.4 1532.0,398.2 1572.1,435.5 1606.6,435.6 1610.0,739.0 1616.0,799.0 1615.0,956.0 1629.0,958.0 1629.0,970.0 1621.0,970.0 1615.0,976.0 1614.0,1013.0 1629.0,1014.0 1629.0,1026.0 1611.0,1027.0 1610.0,1052.0 1556.0,1056.0 1554.0,1092.0 1556.0,1102.0 1609.0,1099.0 1609.0,1125.0 1629.0,1128.0 1629.0,1140.0 1610.0,1141.0 1608.0,1177.0 1629.0,1180.0 1629.0,1191.0 1612.0,1191.0 1608.0,1195.0 1608.9,1218.3 1330.4,1543.6 794.4,1544.9 585.0,1545.3 324.6,1546.0 263.2,1546.2 260.9,401.7 261.3,348.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1407.0,1554.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96194576487682,41.226800394440204]}},{"type":"Feature","properties":{"resourceCoords":[251.0,392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96471186025171,41.22897585791554]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p19","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0019","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1191.0,1535.0 1254.7,1535.7 1414.2,396.7 1204.2,394.9 717.8,389.2 56.0,384.0 56.0,414.4 1.0,465.9 1.0,842.1 15.0,844.0 16.0,890.0 9.0,891.0 8.0,898.0 1.0,898.0 1.0,930.0 16.0,931.0 16.0,949.0 8.0,957.0 1.0,957.0 1.0,967.1 11.0,968.0 16.0,1004.0 13.0,1008.0 1.0,1008.0 1.0,1025.9 19.0,1024.0 15.0,1060.0 77.0,1064.0 75.0,1109.0 18.0,1107.0 9.0,1127.0 1.0,1127.9 1.0,1132.9 49.5,1177.9 46.7,1519.9 104.0,1520.7 716.1,1529.4 1119.9,1534.2 1191.0,1535.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1191.0,1535.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9563625,41.226747]}},{"type":"Feature","properties":{"resourceCoords":[56.0,384.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9591328,41.2288864]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p1 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4237.2"},{"label":"split_canvas_w","value":"6572.0"},{"label":"split_canvas_h","value":"3558.8"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0001","type":"ImageService3","width":1643,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1642.0,1475.0 1594.2,1469.1 877.0,1214.7 876.5,1186.5 1.0,1429.6 1.0,1473.7 46.8,1472.2 68.8,1758.8 123.6,1889.8 177.1,1918.6 431.0,1916.0 525.0,1925.0 554.5,1923.7 735.5,1911.2 940.0,1919.4 1047.0,1920.0 1164.0,1925.0 1371.0,1924.0 1462.0,1931.0 1537.2,1926.2 1581.5,1867.8 1610.2,1543.2 1642.0,1539.5 1642.0,1475.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[871.0,1483.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9698335188015,41.249282782546565]}},{"type":"Feature","properties":{"resourceCoords":[1591.0,1483.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96987772993303,41.24796418979649]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0020__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p20 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.93"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3266.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3253.6"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0020__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0020","type":"ImageService3","width":1630,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1552.0,1115.0 1582.0,1112.8 1582.7,152.1 1582.7,89.6 1137.2,40.5 982.4,94.9 950.2,392.2 1058.3,650.1 1032.4,1325.7 816.6,1542.3 816.6,1648.1 1582.5,1869.5 1582.0,1836.3 1582.0,1155.8 1553.0,1158.0 1552.0,1115.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0020__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1582.0,1311.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9789537,41.2175225]}},{"type":"Feature","properties":{"resourceCoords":[1582.0,681.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9789285,41.218668]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0021__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p21 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"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":"6548.0"},{"label":"split_canvas_h","value":"5975.2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0021__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0021","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"270.2,1492.8 560.6,1423.2 1544.0,1426.3 1609.8,1403.5 1615.0,1227.4 1636.0,1228.2 1636.0,1227.0 1373.8,1225.8 1373.2,1143.2 1378.8,84.6 528.2,83.0 248.0,80.5 245.6,553.6 234.4,1220.5 231.7,1492.8 263.2,1492.8 270.2,1492.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0021__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1390.0,1226.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97878750452277,41.22492725156261]}},{"type":"Feature","properties":{"resourceCoords":[1390.0,74.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97596957650727,41.22490223391779]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p23","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0023","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"287.2,1521.2 254.6,1520.9 254.2,669.5 256.0,389.0 1328.5,391.8 1355.5,391.9 1393.1,392.1 1387.3,505.6 1385.7,807.3 1386.1,1213.5 1386.5,1436.1 632.4,1521.9 318.1,1521.3 287.2,1521.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1385.0,1523.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9732356,41.2248898]}},{"type":"Feature","properties":{"resourceCoords":[256.0,389.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9759526,41.2270016]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p24","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0024","type":"ImageService3","width":1632,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1137.5,1525.3 1031.3,1529.7 246.0,1534.0 247.2,1474.2 244.8,1221.7 241.5,812.0 241.2,631.5 877.2,390.5 1415.6,388.4 1417.8,695.5 1445.5,839.0 1446.5,1088.6 1418.6,1208.3 1420.3,1527.5 1137.5,1525.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[246.0,1534.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9732356,41.2248898]}},{"type":"Feature","properties":{"resourceCoords":[246.0,393.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9731766,41.2269662]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p25","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0025","type":"ImageService3","width":1623,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1367.5,872.9 1370.2,1478.9 1370.5,1542.3 1305.8,1542.3 1025.3,1542.4 899.3,1542.5 754.5,1543.7 314.8,1545.7 221.6,1544.7 219.4,1231.8 246.5,1114.3 245.1,869.6 217.7,729.0 215.0,427.9 811.7,422.4 1365.8,421.7 1367.5,872.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[891.0,1545.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96874204800315,41.22482656527882]}},{"type":"Feature","properties":{"resourceCoords":[1375.0,1545.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96754764237116,41.22480573068317]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p26","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0026","type":"ImageService3","width":1632,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1300.1,1528.1 1111.8,1529.3 907.0,1530.8 504.8,1533.5 229.0,1537.0 224.4,860.7 221.8,404.9 519.9,401.7 1355.0,395.0 1364.3,1452.8 1363.4,1527.6 1300.1,1528.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[229.0,1537.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9675585,41.224811]}},{"type":"Feature","properties":{"resourceCoords":[1355.0,395.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9647377,41.2268563]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p27","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0027","type":"ImageService3","width":1623,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"934.8,400.3 1345.0,395.0 1349.3,737.5 1353.7,1080.0 1359.3,1524.0 1285.8,1524.8 595.0,1533.0 222.7,1537.5 223.2,1463.0 208.8,409.8 934.8,400.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0027/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[595.0,1533.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.963874,41.2247628]}},{"type":"Feature","properties":{"resourceCoords":[1345.0,395.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96195,41.2268199]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p28","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0028","type":"ImageService3","width":1632,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"481.1,56.3 481.1,35.5 719.0,20.0 1001.0,15.0 1119.0,16.0 1344.0,30.0 1363.0,29.6 1391.9,55.7 1394.2,399.8 1396.8,598.0 1394.0,1008.6 1393.8,1538.2 260.4,1541.0 257.6,750.5 256.6,406.3 181.8,406.6 481.1,56.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[251.0,1563.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96202274102602,41.22469665694212]}},{"type":"Feature","properties":{"resourceCoords":[1401.0,1563.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95921585847354,41.22465238079919]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p29","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0029","type":"ImageService3","width":1623,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1329.4,1533.0 315.6,1532.5 299.4,1532.5 236.9,1532.5 239.2,831.4 242.7,585.9 240.7,386.4 1400.0,388.0 1400.0,1533.0 1329.4,1533.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1400.0,1533.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9564125,41.2246592]}},{"type":"Feature","properties":{"resourceCoords":[1400.0,388.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9563625,41.226747]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p2 [1]","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":"6464.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0002","type":"ImageService3","width":1616,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1432.5,1882.7 1575.0,1778.0 1586.5,995.0 737.4,919.9 737.0,918.0 736.5,918.0 736.5,914.2 617.8,110.9 529.8,62.1 94.9,50.2 53.3,130.8 62.8,1478.3 68.0,1572.7 121.9,1897.6 1432.5,1882.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1133.0,1620.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96703999591983,41.2579300880254]}},{"type":"Feature","properties":{"resourceCoords":[69.0,1601.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96967352540317,41.25800990957469]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p3","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0003","type":"ImageService3","width":1643,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"296.3,115.6 298.2,139.4 433.7,140.0 886.0,134.0 1485.6,134.9 1484.9,266.6 1486.2,521.0 1485.4,642.8 1484.9,1714.4 1485.3,1826.1 1438.5,1819.1 1179.3,1812.8 884.6,1819.2 884.4,1921.0 875.9,1921.0 876.5,1872.3 438.3,1891.2 117.5,1862.3 62.8,1783.1 80.9,1046.5 113.1,920.1 223.4,906.8 220.9,758.1 114.0,752.3 94.0,691.6 216.9,517.9 214.6,380.6 103.5,351.9 119.5,168.6 76.8,127.3 75.7,62.5 41.7,78.3 20.0,48.0 296.3,115.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[886.0,134.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9728023,41.2427069]}},{"type":"Feature","properties":{"resourceCoords":[1485.0,1530.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9700959,41.2377344]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0030__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p30 [1]","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"25"},{"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":"6528.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0030__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0030","type":"ImageService3","width":1632,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1528.0,1257.2 1528.0,966.0 1524.7,675.6 1524.2,31.4 1514.7,31.6 1513.8,72.8 1132.5,58.8 1023.8,91.4 898.9,71.6 575.4,112.8 118.5,96.7 61.7,121.5 62.6,679.7 354.7,678.8 356.8,999.5 356.2,1229.9 357.3,1294.1 357.0,1592.3 358.0,1730.8 947.6,1803.6 947.8,1836.5 1531.5,1833.9 1530.2,1504.8 1528.0,1257.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0030__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[648.0,677.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9508176,41.2277256]}},{"type":"Feature","properties":{"resourceCoords":[1528.0,966.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9522858,41.224602]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0030__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p30 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.71"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2902.8"},{"label":"split_canvas_w","value":"1266.8"},{"label":"split_canvas_h","value":"2617.2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0030__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0030","type":"ImageService3","width":1632,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"253.8,1339.0 288.7,1339.0 288.5,796.4 282.0,799.2 72.5,778.0 32.8,811.8 28.9,1318.0 8.3,1318.0 8.4,1340.1 253.8,1339.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0030__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[288.7,779.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9480323,41.2297754]}},{"type":"Feature","properties":{"resourceCoords":[288.7,1339.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9507677,41.2298191]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p31","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0031","type":"ImageService3","width":1623,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"202.3,1526.2 229.3,665.0 230.3,665.0 230.0,407.0 311.4,405.8 1353.5,405.1 1351.3,1056.9 1353.7,1325.2 1351.0,1535.0 1046.6,1533.9 202.9,1535.2 202.3,1526.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0031/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1351.0,1535.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9760514,41.2228132]}},{"type":"Feature","properties":{"resourceCoords":[230.0,407.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9787846,41.2249569]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p32","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0032","type":"ImageService3","width":1632,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"228.4,1327.7 227.0,1057.5 231.6,401.0 294.4,401.4 605.6,401.9 1352.5,316.9 1352.5,344.3 1351.0,403.0 1353.4,466.2 1348.4,1141.2 1357.8,1461.9 1357.6,1534.8 1357.5,1567.7 225.4,1578.2 225.0,1539.0 228.4,1327.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0032/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[225.0,1539.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9760514,41.2228132]}},{"type":"Feature","properties":{"resourceCoords":[1351.0,403.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9732356,41.2248898]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p33","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0033","type":"ImageService3","width":1623,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1402.7,721.9 1430.3,845.6 1428.7,1043.5 1429.4,1091.2 1400.2,1213.3 1399.8,1467.4 1400.0,1536.0 816.0,1536.0 260.8,1533.1 261.0,1460.4 251.8,1140.8 257.4,468.0 255.0,405.0 1023.4,406.8 1127.2,403.4 1404.0,407.7 1402.7,721.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0033/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[816.0,1536.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9718858,41.2227717]}},{"type":"Feature","properties":{"resourceCoords":[255.0,405.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9732356,41.2248898]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0034/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p34","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0034/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0034","type":"ImageService3","width":1627,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1366.9,473.7 1365.2,965.6 1365.2,1033.7 1365.7,1161.0 1367.3,1479.4 219.7,1531.1 219.4,1466.0 219.2,1211.9 248.1,1089.8 248.4,844.3 220.6,720.6 221.1,406.6 314.0,408.2 897.1,409.4 1367.2,412.6 1366.9,473.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0034/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1366.0,1539.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96760557928451,41.22271499442248]}},{"type":"Feature","properties":{"resourceCoords":[1366.0,403.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96756113294101,41.224828911171244]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p35","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0035","type":"ImageService3","width":1623,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1046.8,1548.2 251.1,1545.0 248.3,1252.8 249.0,406.0 926.8,405.4 1383.0,406.0 1382.8,1551.9 1046.8,1548.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0035/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[249.0,406.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9675585,41.224811]}},{"type":"Feature","properties":{"resourceCoords":[1383.0,406.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9647874,41.2247754]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p36","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0036","type":"ImageService3","width":1627,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1095.2,1936.7 1079.0,1938.0 1079.0,1948.0 1025.0,1948.0 1024.0,1935.0 993.0,1933.0 989.0,1939.0 983.0,1939.0 982.0,1933.0 934.0,1931.0 931.0,1938.0 929.0,1932.0 856.0,1934.0 855.0,1948.0 851.0,1948.0 850.0,1934.0 667.0,1935.0 487.7,1924.3 221.5,1578.3 221.8,1531.1 227.0,393.0 1287.2,399.1 1360.5,399.5 1347.0,1536.5 1345.9,1605.4 1095.2,1936.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0036/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[809.0,1534.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9633911,41.2226502]}},{"type":"Feature","properties":{"resourceCoords":[227.0,393.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9647874,41.2247754]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p37","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0037/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0037","type":"ImageService3","width":1623,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1396.0,1541.0 1035.1,1539.5 234.2,1545.1 246.5,382.9 1396.0,388.0 1396.0,1541.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0037/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1396.0,1541.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.959271,41.2226109]}},{"type":"Feature","properties":{"resourceCoords":[1396.0,388.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9592322,41.2246983]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p38","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0038/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0038","type":"ImageService3","width":1627,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"225.0,381.0 303.9,381.4 1393.2,387.9 1387.0,1539.0 1386.7,1600.3 223.2,1568.8 223.4,1530.8 225.0,381.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0038/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[225.0,381.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9592322,41.2246983]}},{"type":"Feature","properties":{"resourceCoords":[1387.0,1539.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9564625,41.2225695]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0039/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p39","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0039/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0039","type":"ImageService3","width":1623,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"271.0,43.5 911.9,43.4 1394.4,41.1 1404.1,1185.1 1404.6,1737.1 1327.6,1729.2 885.7,1730.6 271.8,1722.9 271.7,1540.0 271.7,1481.7 271.6,1249.1 271.6,1181.5 271.0,43.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0039/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[261.0,1174.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95648798289463,41.22258370270411]}},{"type":"Feature","properties":{"resourceCoords":[1406.0,1174.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95369286527371,41.222544836833464]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0040__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p40 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.44"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3891.2"},{"label":"split_canvas_w","value":"6508.0"},{"label":"split_canvas_h","value":"3904.8"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0040__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0040","type":"ImageService3","width":1627,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"233.4,1881.0 459.1,1883.1 801.4,1892.0 1064.2,1887.5 1063.3,1876.2 1501.2,1882.7 1539.2,1847.7 1577.5,1498.0 1561.0,1076.0 1533.5,1022.5 1030.1,997.7 238.8,1003.0 189.2,1026.5 180.8,1015.3 178.3,1582.4 158.0,1582.2 207.1,1880.8 233.4,1881.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0040__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[799.0,1887.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9438558600328,41.22134306974593]}},{"type":"Feature","properties":{"resourceCoords":[799.0,1007.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.94380838819987,41.22443345922739]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0040__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p40 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.70"},{"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":"6508.0"},{"label":"split_canvas_h","value":"3891.2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0040__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0040","type":"ImageService3","width":1627,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1198.5,942.9 1396.4,944.5 1586.7,945.9 1537.0,646.4 1557.3,646.5 1558.9,77.5 1536.0,46.9 1344.5,41.1 1312.2,40.1 1312.3,49.9 654.4,44.2 357.8,44.9 60.5,42.1 62.4,641.8 61.1,931.2 96.0,938.8 677.5,941.2 1198.5,942.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0040__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[363.0,63.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95226284078413,41.22453819288213]}},{"type":"Feature","properties":{"resourceCoords":[1235.0,63.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.94820257927779,41.22449794999164]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p41","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0041","type":"ImageService3","width":1623,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"248.5,1433.4 294.7,1221.8 241.3,411.7 1089.1,407.1 1395.0,407.0 1396.0,460.4 1403.2,644.9 1403.0,670.0 1399.7,1053.0 1398.1,1233.2 1396.1,1459.6 1395.8,1529.3 274.0,1538.0 248.5,1433.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0041/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[274.0,1538.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9788814,41.2207568]}},{"type":"Feature","properties":{"resourceCoords":[1395.0,407.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9760514,41.2228132]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p42","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0042","type":"ImageService3","width":1627,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"224.4,1521.2 239.3,635.4 233.4,436.2 1364.9,426.7 1364.0,623.1 1363.0,744.5 1358.2,1333.7 1356.0,1524.0 224.4,1521.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[233.0,397.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9760514,41.2228132]}},{"type":"Feature","properties":{"resourceCoords":[1356.0,1524.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9733188,41.2206945]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p43","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0043/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0043","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"241.5,1839.0 238.4,1606.7 237.6,1542.2 236.3,1158.4 232.6,758.0 229.8,466.3 229.2,405.3 789.3,399.7 1378.3,390.8 1381.8,615.6 1358.6,698.9 1386.3,872.6 1392.3,1175.7 1392.4,1526.9 848.7,1535.0 728.0,1598.9 680.8,1750.4 440.8,1751.0 241.7,1856.5 241.5,1839.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0043/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[808.0,403.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97184017146343,41.22276459649493]}},{"type":"Feature","properties":{"resourceCoords":[240.0,403.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9732325219368,41.222794743763565]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p44","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0044","type":"ImageService3","width":1627,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"325.8,1521.9 238.4,1525.4 241.4,1177.7 238.3,877.7 212.4,705.5 236.1,623.3 234.7,400.8 234.7,397.2 1380.7,341.2 1381.3,399.4 1375.1,1519.2 325.8,1521.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0044/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[73.0,398.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97084178912719,41.22276795516821]}},{"type":"Feature","properties":{"resourceCoords":[1382.0,1523.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96765395406378,41.22062398402326]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0045/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p45","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0045/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0045","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"954.3,1514.1 707.8,1515.3 256.7,1517.5 259.0,392.0 1047.9,390.4 1381.0,392.0 1381.2,439.1 1614.0,735.2 1614.0,1182.8 1391.8,1402.6 1390.7,1512.1 954.3,1514.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0045/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[259.0,392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.967601,41.2227175]}},{"type":"Feature","properties":{"resourceCoords":[1381.0,392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9648358,41.2226693]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0046/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p46","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0046/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0046","type":"ImageService3","width":1635,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"242.4,1472.0 241.0,1543.0 307.7,1542.9 1390.7,1541.7 1390.3,1482.0 1389.2,1304.0 1386.3,725.4 1385.4,528.0 1385.2,462.2 1385.0,395.0 1029.5,396.2 240.8,407.5 240.3,476.9 1.0,798.7 1.0,1156.7 242.4,1472.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0046/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[241.0,1543.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9621262,41.2205459]}},{"type":"Feature","properties":{"resourceCoords":[1385.0,395.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.959271,41.2226109]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0047__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p47 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3019.2"},{"label":"split_canvas_w","value":"6460.0"},{"label":"split_canvas_h","value":"4776.8"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0047__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0047","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"828.2,1888.7 972.3,1892.7 1389.7,1886.9 1389.7,1820.0 1388.1,1302.7 1386.9,835.8 268.6,814.6 273.2,1893.0 773.3,1889.0 828.2,1888.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0047__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1397.0,1306.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95646418320044,41.22156806217358]}},{"type":"Feature","properties":{"resourceCoords":[249.0,785.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95932025266492,41.22259698322232]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0047__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p47 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.97"},{"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":"6460.0"},{"label":"split_canvas_h","value":"3019.2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0047__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0047","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"254.4,100.0 257.9,528.0 253.0,675.8 319.5,675.7 1392.5,674.5 1394.0,107.0 339.1,100.2 321.7,100.2 254.4,100.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0047__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[253.0,675.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9579229,41.2204896]}},{"type":"Feature","properties":{"resourceCoords":[1394.0,107.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9565715,41.2183726]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0048__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p48 [1]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.74"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3915.2"},{"label":"split_canvas_w","value":"6540.0"},{"label":"split_canvas_h","value":"3880.8"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0048__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0048","type":"ImageService3","width":1635,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"91.9,1909.2 380.8,1906.5 380.8,1915.8 895.9,1935.0 912.0,1935.0 912.0,1935.6 920.9,1936.0 921.0,1934.0 963.9,1933.0 963.6,1902.9 1198.3,1901.2 1271.5,1900.7 1548.2,1898.7 1544.5,1881.0 1579.6,1319.0 1550.5,1022.0 1292.7,1029.8 956.8,1025.5 735.4,1026.3 523.4,1027.2 329.8,1027.9 67.0,1030.0 86.1,1323.5 87.0,1323.5 91.9,1909.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0048__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[668.0,1905.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9469204,41.2182456]}},{"type":"Feature","properties":{"resourceCoords":[87.0,1323.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9496165,41.22038]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0048__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p48 [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":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6540.0"},{"label":"split_canvas_h","value":"3966.8"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0048__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0048","type":"ImageService3","width":1635,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1253.7,954.8 1546.2,953.7 1543.2,359.8 1542.3,359.8 1523.9,62.1 1273.7,63.3 697.0,65.5 662.4,58.3 622.3,54.3 392.6,55.6 73.3,52.5 74.5,409.3 74.5,959.2 1253.7,954.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0048__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[955.0,946.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95243645469435,41.218350799278475]}},{"type":"Feature","properties":{"resourceCoords":[1537.0,946.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.94970424204274,41.218307161309134]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0049/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p49","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0049/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0049","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"243.6,1534.2 245.6,1013.8 245.8,952.3 267.8,954.9 246.4,647.6 247.0,404.0 1375.0,404.0 1375.7,467.4 1377.1,626.8 1378.8,811.9 1380.7,1014.4 1383.2,1307.9 1385.3,1538.9 243.6,1534.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0049/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[247.0,404.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9788814,41.2207568]}},{"type":"Feature","properties":{"resourceCoords":[1375.0,404.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9761097,41.2207278]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p4 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.83"},{"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":"6496.0"},{"label":"split_canvas_h","value":"3965.2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0004","type":"ImageService3","width":1624,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1516.3,899.0 1534.7,794.8 1537.1,670.6 1537.8,442.6 1496.8,442.7 1516.7,402.1 1517.7,284.6 1518.1,40.9 1498.9,41.1 1494.7,95.4 1276.8,155.3 1087.0,157.6 738.5,75.7 674.2,90.8 606.9,152.5 327.4,152.2 220.5,200.1 95.2,205.2 87.1,735.9 139.8,810.4 399.1,875.2 400.7,897.6 528.0,898.8 953.0,895.3 1516.3,899.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[953.0,895.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9728023,41.2427069]}},{"type":"Feature","properties":{"resourceCoords":[953.0,465.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9727768,41.2443254]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0004__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p4 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.08"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1796.0"},{"label":"split_canvas_y","value":"3920.8"},{"label":"split_canvas_w","value":"4700.0"},{"label":"split_canvas_h","value":"2015.2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0004__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0004","type":"ImageService3","width":1624,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"542.9,1448.2 576.2,1447.5 598.5,1483.0 631.8,1483.0 1090.2,1480.2 1071.6,1458.9 1096.5,1413.3 1096.5,1409.8 1096.5,1409.3 1098.6,1409.3 1099.5,1407.8 1572.9,1405.2 1604.2,1346.7 1586.3,1007.4 1416.8,1025.3 1292.2,1118.2 1198.3,1120.2 1157.5,1066.8 1011.6,1004.8 752.4,1053.6 538.9,1039.9 539.4,1014.4 516.3,1110.6 507.2,1111.0 542.9,1448.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0004__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1607.0,1021.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9577108,41.2380176]}},{"type":"Feature","properties":{"resourceCoords":[1607.0,922.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9577006,41.238387]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p5","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0005","type":"ImageService3","width":1643,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1642.0,699.5 1642.0,721.6 1628.8,721.5 1642.0,1093.9 1642.0,1326.7 1616.7,1319.0 1599.2,1914.8 266.2,1900.3 266.1,1884.0 70.0,1884.0 55.9,1316.0 66.3,816.4 79.5,726.1 92.2,726.2 303.5,23.4 386.0,22.0 390.0,27.0 599.0,25.0 621.1,22.5 1547.3,56.0 1624.2,591.1 1642.0,581.3 1642.0,699.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1090.0,1884.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.972992,41.234876]}},{"type":"Feature","properties":{"resourceCoords":[70.0,1884.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9729422,41.2367473]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p50","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0050","type":"ImageService3","width":1635,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1369.0,671.5 1369.0,1507.0 1308.2,1507.2 251.8,1505.2 239.6,376.7 1369.0,377.0 1369.0,671.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0050/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1369.0,1507.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9733624,41.2185942]}},{"type":"Feature","properties":{"resourceCoords":[1369.0,377.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9733188,41.2206945]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0051__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p51 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.86"},{"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":"6460.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0051__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0051","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1366.5,1534.6 1365.5,1226.8 1391.2,1114.0 1391.2,867.6 1366.6,779.0 1363.9,408.1 827.6,409.9 707.9,471.6 659.6,620.4 423.0,618.2 225.5,720.0 226.8,1533.0 1282.5,1533.5 1366.5,1534.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0051__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[787.0,410.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9719214,41.2206764]}},{"type":"Feature","properties":{"resourceCoords":[225.0,410.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9733188,41.2206945]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0052/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p52","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0052/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0052","type":"ImageService3","width":1635,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1389.6,976.0 1395.4,1323.6 1396.6,1393.0 1397.7,1454.8 1397.7,1469.7 1398.8,1534.2 1331.0,1534.5 1064.2,1536.3 942.4,1537.2 532.0,1540.0 448.2,1540.2 255.2,1542.8 252.2,1234.2 277.1,1120.8 275.4,873.7 250.1,785.0 244.8,413.1 332.0,409.2 1380.5,401.7 1389.6,976.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0052/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[839.0,1531.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96908100564107,41.21855008933152]}},{"type":"Feature","properties":{"resourceCoords":[1401.0,409.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96762052840596,41.22061665382675]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0053/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p53","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0053/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0053","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"220.4,1396.1 217.5,975.3 213.9,395.9 1351.2,400.3 1350.9,483.6 1353.5,577.8 1335.0,596.0 1331.2,1381.5 1350.4,1408.5 1349.2,1540.9 1294.7,1541.6 472.1,1539.2 330.4,1541.5 276.1,1538.7 221.2,1538.5 220.4,1396.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0053/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[676.0,396.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96653514179694,41.220618660093876]}},{"type":"Feature","properties":{"resourceCoords":[217.0,1534.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96770394077704,41.21852730489821]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0054/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p54","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0054/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0054","type":"ImageService3","width":1635,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1383.9,411.1 1354.0,411.2 1355.4,340.8 1110.7,21.3 1047.0,19.0 1046.0,1.0 1015.0,1.0 1015.0,8.0 1001.0,18.0 824.0,17.0 510.7,33.9 240.3,300.5 239.0,410.0 242.4,586.9 224.2,605.0 225.8,1387.8 245.2,1414.6 244.8,1546.5 306.1,1547.1 1370.2,1542.9 1412.5,1542.7 1383.9,411.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0054/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[803.0,410.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9634849,41.22057]}},{"type":"Feature","properties":{"resourceCoords":[239.0,410.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9648758,41.2205925]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0055/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p55","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0055/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0055","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1358.4,1799.9 212.0,1829.0 212.0,1792.4 210.3,705.4 205.4,132.8 1351.4,123.8 1358.3,1785.5 1358.4,1799.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0055/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1367.0,709.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9593868436577,41.21838550643968]}},{"type":"Feature","properties":{"resourceCoords":[209.0,1843.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9620862448899,41.22055086361944]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0056/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p56","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0056/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0056","type":"ImageService3","width":1628,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1551.6,1344.7 1387.4,1352.3 1390.0,1855.0 241.0,1860.8 240.7,1803.5 231.9,137.4 231.8,115.7 521.9,113.5 539.8,104.3 814.5,103.3 813.5,55.8 1380.5,40.0 1380.9,139.7 1384.0,711.1 1391.5,711.0 1551.6,1344.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0056/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[238.0,1296.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9607748,41.2184279]}},{"type":"Feature","properties":{"resourceCoords":[1390.0,1855.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9621956,41.2163472]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0057/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p57","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0057/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0057","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"208.5,855.4 179.5,857.6 178.5,814.6 208.4,812.4 208.1,381.2 1367.2,382.0 1367.0,1535.0 209.0,1535.0 208.5,855.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0057/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[209.0,1535.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9789747,41.2165673]}},{"type":"Feature","properties":{"resourceCoords":[1367.0,1535.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.976172,41.2165308]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p58","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0058","type":"ImageService3","width":1628,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1382.7,1106.4 1388.6,1266.3 1388.9,1509.7 814.8,1514.5 332.8,1518.5 320.9,1518.6 266.0,1519.1 256.6,390.0 1373.6,380.3 1382.7,1106.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0058/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[249.0,1515.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9762137153704,41.21653923401006]}},{"type":"Feature","properties":{"resourceCoords":[1381.0,383.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97334426205191,41.21858892273191]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0059/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p59","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0059/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0059","type":"ImageService3","width":1612,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1366.8,438.9 1366.1,616.0 1366.0,1280.1 1365.0,1517.0 1273.3,1516.6 1037.3,1515.8 353.9,1513.3 270.6,1513.1 214.9,1512.9 217.4,1268.1 213.5,1107.2 213.0,377.0 1281.2,381.1 1366.1,382.4 1366.8,438.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0059/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[213.0,377.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9733624,41.2185942]}},{"type":"Feature","properties":{"resourceCoords":[1365.0,1517.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9705703,41.2164571]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p60","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0060/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0060","type":"ImageService3","width":1628,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1385.0,463.2 1384.5,719.2 1384.0,1085.6 1383.8,1191.2 1383.6,1455.9 1383.2,1543.2 211.8,1541.9 212.2,1300.6 210.2,386.5 494.6,385.9 1385.0,387.0 1385.0,463.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0060/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[212.0,1136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9705539,41.2171939]}},{"type":"Feature","properties":{"resourceCoords":[1385.0,387.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9676937,41.2185189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p61","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0061/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0061","type":"ImageService3","width":1612,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"629.3,1529.9 263.8,1529.9 206.0,1530.0 206.0,1180.5 206.0,916.5 206.1,457.7 206.0,382.0 316.4,384.7 459.7,381.9 1346.5,380.8 1346.0,550.7 1328.3,579.0 1328.4,875.8 1364.7,876.5 1365.0,1310.9 1347.8,1332.9 1339.8,1529.6 629.3,1529.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0061/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[206.0,1530.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9677434,41.2164201]}},{"type":"Feature","properties":{"resourceCoords":[206.0,382.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9676937,41.2185189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0062/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p62","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0062/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0062","type":"ImageService3","width":1628,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"247.9,1528.2 254.9,1333.8 271.7,1312.0 269.1,882.9 233.2,882.4 231.6,589.2 248.9,561.1 248.5,393.2 309.9,393.7 1376.6,387.7 1382.8,1521.8 247.9,1528.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0062/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[804.0,387.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96355486812979,41.21847176027869]}},{"type":"Feature","properties":{"resourceCoords":[1381.0,387.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96213544538837,41.21844704657586]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0063__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p63 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.64"},{"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":"6448.0"},{"label":"split_canvas_h","value":"2616.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0063__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0063","type":"ImageService3","width":1612,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"350.8,632.4 971.6,633.2 1004.7,633.3 1560.8,634.1 1561.7,41.6 385.9,39.9 101.8,39.5 101.9,189.1 106.6,198.3 106.2,340.0 130.7,339.6 136.8,632.0 350.8,632.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0063__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[388.0,619.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95660498250884,41.21632121472885]}},{"type":"Feature","properties":{"resourceCoords":[1550.0,619.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95113362544974,41.21625524276836]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0063__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p63 [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":"2616.0"},{"label":"split_canvas_w","value":"6448.0"},{"label":"split_canvas_h","value":"2560.8"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0063__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0063","type":"ImageService3","width":1612,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1252.3,1277.3 1565.6,1272.9 1528.6,676.8 1493.1,676.8 1254.5,676.5 1254.5,707.2 1210.7,709.8 662.0,684.6 662.0,675.2 368.4,675.5 75.1,675.1 74.4,1271.2 661.8,1272.0 662.0,1287.0 1252.5,1288.0 1252.3,1277.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0063__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[659.0,973.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.94832407982021,41.21721713640584]}},{"type":"Feature","properties":{"resourceCoords":[1247.0,689.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.94554949074809,41.218183522607546]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0063__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p63 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.29"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5176.8"},{"label":"split_canvas_w","value":"6448.0"},{"label":"split_canvas_h","value":"2619.2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0063__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0063","type":"ImageService3","width":1612,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"978.8,1897.9 1404.8,1904.1 1517.5,1868.8 1531.0,1579.5 1531.2,1539.1 1497.0,1401.8 1089.2,1346.2 403.0,1342.9 387.1,1308.2 110.2,1306.6 72.0,1306.3 105.7,1892.8 124.7,1892.9 300.9,1894.0 978.8,1897.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0063__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[385.0,1609.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.94275775256669,41.21711338674908]}},{"type":"Feature","properties":{"resourceCoords":[385.0,1329.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9427422424817,41.21811537626611]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0065__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p65 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"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":"6448.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0065__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0065","type":"ImageService3","width":1612,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"764.1,108.6 654.2,462.3 649.5,462.7 649.4,467.4 595.4,467.7 551.9,471.7 460.3,649.3 29.1,687.4 43.6,1060.2 71.0,1061.0 68.0,1109.0 45.5,1108.6 75.3,1872.5 1210.8,1900.5 1228.7,1938.5 1570.8,1532.9 1570.7,1504.7 1569.1,1141.6 1563.5,828.4 1555.4,517.8 1553.3,396.5 796.1,181.0 795.8,76.6 764.1,108.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0065__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1556.0,844.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97899089254147,41.21568237717023]}},{"type":"Feature","properties":{"resourceCoords":[1556.0,1495.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97902352161294,41.214482926950566]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0065__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p65 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.75"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1834.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"791.6"},{"label":"split_canvas_h","value":"1873.6"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0065__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0065","type":"ImageService3","width":1612,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"647.8,461.2 648.5,454.8 649.4,401.0 609.5,360.9 561.6,320.6 554.2,321.2 533.4,337.9 526.7,345.9 493.7,393.2 487.6,408.6 490.1,437.9 513.5,450.8 647.8,461.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0065__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[458.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.98127321800234,41.21455124973491]}},{"type":"Feature","properties":{"resourceCoords":[656.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.98079444567965,41.2145198202597]}},{"type":"Feature","properties":{"resourceCoords":[656.5,468.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.98089201668851,41.21366685582411]}},{"type":"Feature","properties":{"resourceCoords":[458.6,468.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.98137078901121,41.213698285299316]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0066/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p66","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0066/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0066","type":"ImageService3","width":1600,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"783.0,1497.9 227.3,1499.8 226.8,1137.7 222.2,825.4 215.1,515.6 213.0,362.0 1354.0,362.0 1354.0,420.1 1354.0,542.8 1353.8,1196.6 1353.8,1498.8 783.0,1497.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0066/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[213.0,362.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9789747,41.2165673]}},{"type":"Feature","properties":{"resourceCoords":[1354.0,362.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.976172,41.2165308]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0067/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p67","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0067/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0067","type":"ImageService3","width":1612,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1348.5,650.6 1356.2,1170.9 1358.0,1522.7 715.5,1524.4 293.4,1525.5 275.3,1525.6 228.8,1525.7 226.7,453.3 226.5,395.6 1349.8,393.2 1348.5,650.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0067/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[219.0,1523.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97624507921357,41.2144356107058]}},{"type":"Feature","properties":{"resourceCoords":[1362.0,1523.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97342099697255,41.2143940507958]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0068/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p68","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0068/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0068","type":"ImageService3","width":1600,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1223.8,1519.7 183.0,1515.0 183.8,1166.8 179.9,651.8 183.0,397.0 1224.9,402.4 1315.2,402.9 1310.3,1520.2 1223.8,1519.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0068/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[183.0,1515.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9734309,41.2143948]}},{"type":"Feature","properties":{"resourceCoords":[183.0,397.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9733966,41.2164943]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0069/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p69","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0069/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0069","type":"ImageService3","width":1612,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"236.0,382.0 1389.0,382.0 1388.5,1518.9 236.8,1519.5 236.0,382.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0069/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[236.0,382.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9705703,41.2164571]}},{"type":"Feature","properties":{"resourceCoords":[1389.0,382.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9677434,41.2164201]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0006__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p6 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.49"},{"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":"6496.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0006__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0006","type":"ImageService3","width":1624,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"91.0,1075.2 89.6,1312.9 297.6,1376.7 1175.2,1326.6 1250.0,1380.1 1302.4,1380.1 1302.4,1380.1 1319.2,1429.6 1347.8,1849.5 1243.6,1855.0 1243.5,1865.7 1243.5,1866.6 1243.4,1885.5 1529.3,1886.6 1559.9,1886.8 1571.5,769.3 1563.0,770.0 1559.0,748.0 1562.0,728.0 1593.0,700.0 1593.1,690.6 1404.2,36.6 1335.7,40.9 1337.2,63.4 458.7,45.9 294.8,130.8 232.2,476.9 222.4,482.2 222.4,485.2 216.9,485.2 94.0,551.8 93.2,695.1 79.7,695.0 91.0,1075.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0006__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1593.0,1887.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9730824,41.231156]}},{"type":"Feature","properties":{"resourceCoords":[1593.0,700.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9702461,41.2311255]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0070/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p70","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0070/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0070","type":"ImageService3","width":1600,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1328.4,389.6 1329.4,466.0 1337.1,1324.3 1338.5,1458.4 1339.0,1530.2 211.7,1542.6 200.2,401.4 1328.4,389.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0070/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[193.0,390.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96776020234631,41.21644136530416]}},{"type":"Feature","properties":{"resourceCoords":[1337.0,390.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96496674382126,41.21638273517079]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0071/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p71","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0071/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0071","type":"ImageService3","width":1612,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"408.9,201.1 1363.0,163.7 1362.7,250.4 1362.0,715.0 1360.0,1855.9 219.0,1852.0 221.7,708.3 222.9,208.4 385.9,200.8 408.9,201.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0071/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1362.0,715.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9622541,41.2142531]}},{"type":"Feature","properties":{"resourceCoords":[219.0,1852.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9649878,41.2163839]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0072__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p72 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.09"},{"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":"6400.0"},{"label":"split_canvas_h","value":"2742.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0072__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0072","type":"ImageService3","width":1600,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1539.2,650.6 1559.0,650.4 1560.5,50.3 1530.7,50.5 900.0,56.6 630.4,59.2 331.0,62.1 331.0,66.0 1.0,151.0 1.0,183.1 25.7,666.0 35.4,666.0 973.5,656.4 1214.2,653.9 1539.2,650.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0072__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1225.0,641.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95534855636082,41.214208533086186]}},{"type":"Feature","properties":{"resourceCoords":[1507.0,641.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95404202465954,41.214181923270495]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0072__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p72 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2684.4"},{"label":"split_canvas_w","value":"6400.0"},{"label":"split_canvas_h","value":"2596.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0072__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0072","type":"ImageService3","width":1600,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1471.9,1279.4 1473.7,1279.3 1474.5,985.5 1476.3,985.5 1459.9,708.6 1138.0,712.3 1137.6,697.4 556.8,704.3 3.8,711.0 1.0,711.0 1.0,1298.0 8.5,1297.9 1150.2,1283.4 1471.9,1279.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0072__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1137.0,987.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.94837715049974,41.215133476456145]}},{"type":"Feature","properties":{"resourceCoords":[557.0,709.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95108353144782,41.2161842351818]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0072__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p72 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.47"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5229.6"},{"label":"split_canvas_w","value":"6400.0"},{"label":"split_canvas_h","value":"2566.4"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0072__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0072","type":"ImageService3","width":1600,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"133.9,1902.4 320.0,1903.0 323.7,1932.1 328.1,1905.8 1518.9,1877.8 1540.2,1755.5 1518.8,1317.2 832.3,1314.7 730.5,1314.3 322.3,1317.5 322.6,1328.2 58.5,1327.1 70.6,1606.2 68.8,1606.2 63.2,1902.2 133.9,1902.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0072__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[320.0,1609.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9455995,41.2150809]}},{"type":"Feature","properties":{"resourceCoords":[320.0,1903.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9456186,41.214042]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0073__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p73 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3582.0"},{"label":"split_canvas_w","value":"6448.0"},{"label":"split_canvas_h","value":"4214.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0073__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0073","type":"ImageService3","width":1612,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"10.0,1086.6 82.1,1105.6 73.2,1279.0 81.0,1279.3 83.0,1319.3 80.0,1326.3 70.8,1325.8 51.6,1703.8 100.0,1774.5 329.8,1797.5 506.1,1926.2 543.6,1925.4 1550.5,1886.5 1561.2,1042.3 1538.0,1052.7 1005.8,1078.9 961.5,1069.1 457.3,1092.2 451.4,955.7 10.0,1086.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0073__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[458.0,1065.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.98072496722484,41.22914919127204]}},{"type":"Feature","properties":{"resourceCoords":[1561.0,1065.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.98088580811444,41.22712926573835]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0073__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p73 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.84"},{"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":"6448.0"},{"label":"split_canvas_h","value":"4008.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0073__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0073","type":"ImageService3","width":1612,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"313.6,626.0 729.7,979.4 1360.6,975.3 1387.2,1001.0 1400.7,1001.0 1398.3,872.1 1387.0,626.0 1387.3,74.0 1322.6,73.4 284.4,80.2 286.0,626.0 313.6,626.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0073__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[286.0,626.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9789881,41.2144646]}},{"type":"Feature","properties":{"resourceCoords":[1387.0,626.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9790347,41.2123929]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0074/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p74","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0074/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0074","type":"ImageService3","width":1600,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1371.5,1746.5 1305.0,1746.3 238.0,1760.0 235.6,1183.9 235.2,1118.4 232.3,663.4 228.4,37.5 307.0,42.0 464.0,40.0 464.6,38.6 1359.0,43.0 1365.5,1177.7 1371.5,1746.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0074/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[238.0,1760.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9776229,41.2144502]}},{"type":"Feature","properties":{"resourceCoords":[1359.0,43.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.973508,41.2123254]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0075/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p75","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0075/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0075","type":"ImageService3","width":1606,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"248.7,629.9 247.6,473.2 253.3,395.1 1403.0,405.3 1402.4,462.1 1398.5,873.6 1396.9,1046.6 1395.2,1223.7 1394.0,1355.8 1392.4,1529.9 230.8,1519.0 248.7,629.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0075/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1408.0,373.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97060378058502,41.2144184441612]}},{"type":"Feature","properties":{"resourceCoords":[1408.0,1505.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97062601165014,41.21233387676371]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0076/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p76","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0076/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0076","type":"ImageService3","width":1600,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1355.1,455.6 1355.5,468.6 1358.5,749.0 1367.0,1469.4 1367.6,1517.8 763.7,1525.2 536.1,1528.0 297.3,1530.8 220.1,1531.7 215.2,1133.5 206.4,412.6 1354.4,397.9 1355.1,455.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0076/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[169.0,1525.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97078997830609,41.212303475387436]}},{"type":"Feature","properties":{"resourceCoords":[1361.0,1525.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96785895758764,41.212238112024885]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0077/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p77","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0077/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0077","type":"ImageService3","width":1606,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1376.3,1527.2 240.8,1526.5 242.2,462.6 242.0,391.0 1377.0,391.0 1376.3,1527.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0077/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[242.0,391.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.967793,41.2143233]}},{"type":"Feature","properties":{"resourceCoords":[1377.0,391.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9650394,41.2142884]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0078__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p78 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.57"},{"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":"4805.6"},{"label":"split_canvas_h","value":"2689.2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0078__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0078","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"863.0,637.0 1147.5,641.0 1148.0,542.4 1141.1,95.5 1091.5,69.9 913.9,73.0 917.6,59.0 816.3,58.9 701.7,58.9 594.9,58.9 273.0,128.1 272.8,189.6 272.2,325.6 272.1,377.1 273.0,640.3 305.2,671.3 784.5,671.3 862.9,597.3 863.0,637.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0078__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[851.3,643.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95676379889207,41.210041196189174]}},{"type":"Feature","properties":{"resourceCoords":[277.1,643.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95671690638017,41.21209040372681]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0078__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p78 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.64"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0078__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0078","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1538.8,1891.5 1539.0,1748.8 1567.8,1714.3 1563.4,1714.2 1561.0,1487.0 1546.0,1487.0 1545.0,1449.0 1560.6,1448.3 1546.5,111.8 1544.5,111.8 1257.8,106.3 1257.8,66.4 1197.1,123.2 1198.0,238.9 1201.4,672.3 672.6,672.3 660.3,683.9 660.1,702.6 658.6,997.9 658.2,1298.3 366.9,1297.9 108.8,1291.5 71.2,1293.3 68.5,1885.0 654.1,1888.0 654.2,1876.1 860.6,1803.5 860.8,1786.1 1217.0,1890.2 1237.7,1889.5 1392.1,1892.0 1538.8,1891.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0078__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[963.0,723.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95962082551632,41.21106997329076]}},{"type":"Feature","properties":{"resourceCoords":[369.0,1883.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96504754093971,41.213224194602574]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0078__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p78 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.04"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2689.2"},{"label":"split_canvas_w","value":"2551.6"},{"label":"split_canvas_h","value":"2378.8"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0078__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0078","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"636.9,1233.0 593.1,1232.3 623.6,910.1 589.5,675.2 177.2,699.5 64.5,679.5 36.9,682.8 35.0,859.1 34.3,927.8 31.0,1235.0 142.1,1236.4 636.9,1235.2 636.9,1233.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0078__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[31.0,1235.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.948356,41.2140772]}},{"type":"Feature","properties":{"resourceCoords":[596.9,689.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9456686,41.2119544]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0079__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p79 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.75"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2685.6"},{"label":"split_canvas_w","value":"6424.0"},{"label":"split_canvas_h","value":"5110.4"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0079__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0079","type":"ImageService3","width":1606,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1559.1,1335.8 1556.7,1335.8 1554.2,823.2 1555.3,708.1 424.8,699.3 397.2,699.0 82.3,696.6 75.8,696.5 76.2,1273.1 127.3,1273.5 323.2,1276.0 389.2,1595.8 387.4,1815.3 386.5,1915.8 425.9,1926.8 515.0,1930.0 516.0,1937.0 526.0,1940.0 526.0,1948.0 544.3,1948.0 591.0,1947.6 591.0,1939.0 608.0,1930.0 731.0,1923.0 976.0,1933.0 984.0,1936.0 985.4,1944.0 1040.5,1943.5 1041.0,1938.0 1148.0,1939.0 1148.4,1942.6 1178.0,1942.3 1179.0,1937.0 1272.0,1939.0 1272.3,1941.5 1468.0,1939.7 1527.5,1890.5 1553.1,1815.2 1559.1,1336.4 1559.1,1335.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0079__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[631.0,1286.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95280125601253,41.21202657390308]}},{"type":"Feature","properties":{"resourceCoords":[631.0,714.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9527766897334,41.214084367502764]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0079__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p79 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.61"},{"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":"6424.0"},{"label":"split_canvas_h","value":"2734.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0079__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0079","type":"ImageService3","width":1606,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"686.6,646.2 711.2,646.3 742.0,677.0 1248.5,680.8 1280.0,648.3 1544.1,648.2 1540.7,64.4 1311.3,63.8 391.6,61.1 337.3,60.9 97.3,60.2 99.2,97.8 93.2,355.0 93.4,645.3 392.6,645.2 686.6,646.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0079__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1273.0,637.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95673458794863,41.21214347439086]}},{"type":"Feature","properties":{"resourceCoords":[1273.0,73.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.95669726378695,41.21414912262407]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0007__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p7 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.88"},{"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":"6572.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0007","type":"ImageService3","width":1643,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"29.0,1830.8 445.1,1889.0 445.1,1870.2 1597.7,1918.2 1595.4,1452.7 1595.0,1393.0 1595.1,1329.9 1594.9,1046.6 1625.1,1046.7 1586.4,369.7 1548.4,325.8 1146.9,333.4 1145.1,327.3 1141.3,327.3 1141.0,313.1 1059.3,30.1 100.2,41.0 35.0,131.4 49.3,731.9 85.0,734.0 85.0,774.0 50.3,773.4 71.8,1677.8 29.0,1774.9 29.0,1794.1 29.0,1830.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1015.0,1393.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9744811,41.231176]}},{"type":"Feature","properties":{"resourceCoords":[1595.0,1393.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9730824,41.231156]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0008","type":"ImageService3","width":1624,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1452.0,1473.7 284.9,1515.2 284.8,1471.0 282.4,1053.3 279.8,450.1 279.4,390.6 279.5,358.0 1382.7,364.9 1423.4,355.4 1451.2,385.9 1452.0,1472.0 1452.0,1473.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[273.0,371.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97309705088271,41.231191981310744]}},{"type":"Feature","properties":{"resourceCoords":[1459.0,1550.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97027897816999,41.22900620446081]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0080/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p80","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0080/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0080","type":"ImageService3","width":1625,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1066.0,1915.6 57.5,1893.5 33.2,106.3 77.8,59.6 78.9,72.4 211.2,69.3 463.6,56.5 1030.0,54.0 1597.9,48.8 1600.8,673.5 1601.7,1172.0 1604.5,1508.9 1558.0,1511.0 1559.0,1555.0 1604.7,1555.0 1605.5,1750.3 1540.8,1750.7 1173.2,1826.5 1173.5,1871.1 1066.0,1915.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0080/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1030.0,1177.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9777138,41.2103156]}},{"type":"Feature","properties":{"resourceCoords":[1030.0,54.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9776541,41.2123748]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0081/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p81","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0081/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0081","type":"ImageService3","width":1606,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1385.7,147.9 1385.8,1086.3 1385.0,1333.2 1389.7,1861.9 295.7,1848.8 233.6,1861.1 234.5,1663.8 188.3,1663.4 187.8,1619.0 234.7,1617.3 235.0,1277.0 238.7,773.5 241.4,142.6 1385.7,147.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0081/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[767.0,145.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9750011,41.212345]}},{"type":"Feature","properties":{"resourceCoords":[235.0,1277.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97632,41.2103019]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0082/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p82","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0082/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0082","type":"ImageService3","width":1625,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"242.8,1316.1 245.4,1074.8 252.6,157.3 1404.3,171.8 1390.1,1277.6 1383.6,1841.1 243.3,1833.0 242.8,1316.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0082/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[821.0,151.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9721045569038,41.2123320679414]}},{"type":"Feature","properties":{"resourceCoords":[1411.0,1832.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97066791251876,41.209204547797356]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0083/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p83","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0083/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0083","type":"ImageService3","width":1602,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"216.2,1797.1 216.1,1788.1 215.9,1772.3 211.7,1206.1 204.7,94.9 281.9,94.5 521.0,93.0 1353.5,87.6 1362.0,1278.2 1364.5,1778.7 216.2,1797.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0083/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[201.0,1759.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97077156754139,41.209213159893935]}},{"type":"Feature","properties":{"resourceCoords":[200.0,77.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97067516303214,41.21232161263035]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0084__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p84 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"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":"6500.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0084__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0084","type":"ImageService3","width":1625,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"88.4,83.8 93.2,1293.2 94.1,1780.0 661.9,1821.0 661.5,1792.7 1234.8,1786.9 1231.6,1516.6 1234.0,1216.0 1232.2,1175.8 1254.1,1098.4 1254.5,1055.0 1266.4,1055.0 1429.1,480.6 1395.2,480.7 1250.5,80.0 1227.4,80.0 88.4,83.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0084__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1234.0,1216.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9651285,41.2101479]}},{"type":"Feature","properties":{"resourceCoords":[93.0,1216.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9678878,41.2101909]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0085/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p85","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0085/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0085","type":"ImageService3","width":1602,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1.0,1793.2 1.0,1846.8 67.4,1924.3 96.0,1926.0 353.0,1923.0 452.0,1934.0 567.0,1935.0 568.0,1948.0 572.0,1948.0 573.0,1935.0 799.0,1929.0 945.0,1939.0 946.0,1948.0 1124.2,1948.0 1541.9,1808.5 1542.0,1776.1 1544.5,1207.7 1554.6,650.5 1558.9,55.9 488.5,45.2 427.8,57.3 363.8,57.3 1.0,129.4 1.0,173.2 23.5,164.1 54.8,1798.9 1.0,1793.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0085/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[423.0,603.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.976373,41.2082287]}},{"type":"Feature","properties":{"resourceCoords":[423.0,1750.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9764146,41.2060998]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0086/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p86","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0086/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0086","type":"ImageService3","width":1625,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1403.9,60.8 1404.0,76.7 1404.0,427.1 1404.2,621.1 1429.7,628.0 1454.2,1761.0 1402.8,1761.4 1402.8,1796.8 1402.7,1889.8 238.0,1873.5 237.9,1803.4 239.3,1229.3 248.5,666.7 251.6,66.2 1403.9,60.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0086/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[794.0,1769.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97229519816403,41.20606698504997]}},{"type":"Feature","properties":{"resourceCoords":[1417.0,632.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97072694965718,41.20813762792515]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0087/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p87","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0087/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0087","type":"ImageService3","width":1602,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1323.2,1833.5 291.2,1834.6 265.6,1834.7 242.3,690.5 216.5,683.5 216.6,487.6 216.9,142.8 1383.4,134.0 1381.7,636.7 1381.2,773.4 1370.2,1839.8 1323.2,1833.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0087/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[801.0,1835.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96938681427571,41.2060458771042]}},{"type":"Feature","properties":{"resourceCoords":[1385.0,696.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96793151862553,41.208102493385844]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0088/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p88","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0088/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0088","type":"ImageService3","width":1629,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"150.2,1850.8 92.7,1843.0 103.7,774.4 104.2,637.4 106.1,111.9 674.6,156.0 674.5,127.7 1248.9,125.0 1249.0,140.2 1527.2,139.7 1594.8,195.6 1575.9,1858.4 483.7,1845.5 483.8,1851.9 150.2,1850.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0088/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1245.0,1282.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9652073,41.2070078]}},{"type":"Feature","properties":{"resourceCoords":[104.0,708.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9679406,41.2080822]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0089__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p89 [1]","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":"6408.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0089__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0089","type":"ImageService3","width":1602,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1555.2,202.1 1555.4,118.2 417.5,100.9 417.6,64.3 1.0,203.7 1.0,1179.1 125.3,1433.0 417.1,1431.5 416.9,1623.0 947.8,1465.9 947.7,1458.8 972.9,1458.5 1553.0,1286.8 1553.0,1254.8 1555.2,202.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0089__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[420.0,1443.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97370301771802,41.203366778113576]}},{"type":"Feature","properties":{"resourceCoords":[1530.0,1443.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97092734884248,41.20333470768663]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0089__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p89 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.63"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3790.8"},{"label":"split_canvas_y","value":"5800.4"},{"label":"split_canvas_w","value":"2617.2"},{"label":"split_canvas_h","value":"1995.6"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0089__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0089","type":"ImageService3","width":1602,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"987.1,1910.1 1061.9,1946.1 1117.0,1944.1 1117.5,1939.0 1162.5,1939.0 1162.8,1942.4 1164.0,1942.3 1164.5,1938.0 1253.4,1939.1 1581.3,1927.0 1570.7,1466.9 1565.7,1466.9 981.0,1509.0 987.1,1910.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0089__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[999.6,1782.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.94296381883065,41.20973431825159]}},{"type":"Feature","properties":{"resourceCoords":[1576.0,1488.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.94015776007797,41.210769897541255]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p9","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0009","type":"ImageService3","width":1643,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1387.5,1588.5 221.0,1592.0 220.7,1526.6 218.3,440.8 227.6,440.8 872.0,250.8 867.4,183.3 907.7,180.3 1266.8,154.3 1387.1,240.9 1426.5,444.9 1391.0,445.0 1388.0,1522.6 1387.5,1588.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[221.0,1592.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9702947,41.2290292]}},{"type":"Feature","properties":{"resourceCoords":[1391.0,445.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9674072,41.2310755]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0090/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p90","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0090/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0090","type":"ImageService3","width":1629,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"57.5,1325.6 57.5,259.5 57.5,82.6 57.5,47.6 133.3,47.0 1144.4,43.9 1190.5,50.0 1246.7,57.5 1572.8,57.9 1580.0,465.4 1516.9,597.2 1595.5,937.1 1580.9,1351.3 1628.0,1355.8 1628.0,1499.9 1195.3,1501.1 1194.3,1730.8 57.5,1455.5 57.5,1325.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0090/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1141.0,44.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96813187234461,41.206033812840104]}},{"type":"Feature","properties":{"resourceCoords":[89.0,1629.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97079795835357,41.20312335113827]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0091__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p91 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"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":"6408.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0091__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0091","type":"ImageService3","width":1602,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1410.1,1869.2 1473.0,1531.4 1391.4,1531.6 1391.7,1439.3 1601.0,1201.5 1601.0,213.8 1542.2,145.0 1542.3,91.2 988.0,30.9 149.1,101.2 39.1,214.0 22.2,637.8 71.2,1558.5 297.9,1572.5 518.0,1574.8 569.6,1589.2 572.5,1812.1 781.8,1906.0 1130.0,1819.8 1405.0,1823.7 1410.1,1869.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0091__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[807.0,1541.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97927907454631,41.20341653799968]}},{"type":"Feature","properties":{"resourceCoords":[1378.0,50.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97785488149343,41.206110167878954]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0095__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p95 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.31"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3508.0"},{"label":"split_canvas_y","value":"4810.0"},{"label":"split_canvas_w","value":"2932.0"},{"label":"split_canvas_h","value":"2986.0"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0095__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0095","type":"ImageService3","width":1610,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1589.5,1923.4 1592.7,1213.5 1240.1,1210.6 1240.0,1211.5 1160.0,1211.5 1159.8,1209.9 924.4,1207.9 924.0,1211.5 878.7,1211.5 880.5,1245.9 886.0,1246.5 886.0,1347.6 917.1,1927.5 919.0,1930.0 943.1,1931.1 1589.5,1923.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0095__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[877.0,1202.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.97874513965373,41.237238416564416]}},{"type":"Feature","properties":{"resourceCoords":[1610.0,1202.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.97790083129067,41.2374514835869]}},{"type":"Feature","properties":{"resourceCoords":[1610.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.97761410357555,41.23679988383785]}},{"type":"Feature","properties":{"resourceCoords":[877.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.97845841193862,41.23658681681536]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0096/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p96","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0096/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0096","type":"ImageService3","width":1643,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"120.8,717.5 91.3,445.2 124.2,444.9 127.4,420.5 260.2,55.3 1065.4,49.4 1579.4,50.0 1605.0,447.2 1569.2,763.8 1623.5,1075.0 1582.0,1500.8 1587.6,1824.1 1562.9,1892.6 1044.0,1892.5 171.0,1894.7 123.9,1895.5 142.6,1786.1 144.3,1655.8 143.8,1416.6 100.8,1417.0 121.4,1374.3 121.8,1251.0 120.8,995.3 100.7,995.7 120.8,717.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0096/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[664.0,422.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96728428409821,41.24791899495106]}},{"type":"Feature","properties":{"resourceCoords":[1061.0,1884.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96551180925138,41.24265077299481]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0097/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p97","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0097/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0097","type":"ImageService3","width":1610,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"461.6,1890.5 90.0,1773.4 90.2,1766.9 90.8,1656.3 101.9,595.1 103.9,474.4 105.2,222.4 107.1,92.1 154.4,91.8 1031.4,98.8 1552.5,104.3 1548.4,115.3 1552.3,678.1 1599.3,930.9 1584.5,1353.9 1559.0,1454.1 1549.5,1454.3 1581.8,1807.4 1575.2,1807.5 1587.1,1890.5 1534.4,1917.3 461.2,1920.9 461.6,1890.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0097/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1125.0,1472.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96519370708204,41.23771498489733]}},{"type":"Feature","properties":{"resourceCoords":[96.0,1201.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97007158553087,41.23870807923093]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0098/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p98","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"26"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0098/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0098","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"97.5,224.5 56.6,224.8 56.4,178.6 161.0,58.2 160.8,30.1 284.0,27.0 284.0,20.0 287.0,28.0 613.0,25.0 670.9,21.0 768.4,217.9 919.9,216.5 920.2,315.9 1509.2,138.8 1509.4,211.0 1510.1,530.0 1512.3,1006.4 1511.5,1435.2 1510.6,1531.8 1510.8,1742.6 1450.4,1742.9 1074.2,1728.5 993.0,1763.5 788.3,1767.6 722.5,1828.5 488.6,1862.8 424.7,1834.3 401.4,1782.7 99.2,1755.2 65.1,1726.0 56.1,1268.3 127.0,898.5 67.2,393.9 97.5,224.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0098/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[924.0,1209.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9737844,41.1997914]}},{"type":"Feature","properties":{"resourceCoords":[631.0,627.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.9751403,41.2019215]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0099/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ogden, Utah | 1950 | sanborn08877_005 p99","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T04:25:37Z","modified":"2026-10-18T04:25:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0099/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0099","type":"ImageService3","width":1602,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"118.2,1737.7 118.3,1526.7 119.4,1430.1 121.0,1000.8 119.6,524.0 119.4,204.7 119.4,182.5 702.8,323.4 703.2,205.6 925.3,204.8 925.8,130.9 1099.0,147.4 1169.2,116.3 1385.2,108.7 1508.6,128.8 1535.3,165.6 1563.1,258.2 1511.1,266.6 1485.3,494.4 1517.9,851.4 1562.7,854.4 1563.2,1711.2 1277.0,1757.4 547.2,1792.9 481.1,1846.2 377.1,1870.5 94.0,1875.5 65.4,1738.2 118.2,1737.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344om:g088771950:08877_1950-0099/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[115.0,920.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.97095332788899,41.20077656309204]}},{"type":"Feature","properties":{"resourceCoords":[1564.0,1740.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.96405163478002,41.19771310920587]}}]}}]}