{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02790_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Ottumwa, Iowa | 1917 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"50"},{"label":"placed","value":"30"},{"label":"unplaced","value":"20"},{"label":"fit sources","value":"georef-snap 18, georef 12"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"8 sheet(s) cut into 26 panels"},{"label":"unplaced pages","value":"p16__2 (tier 1, 41.01147,-92.40491 +/-100m); p18__2 (tier 1, 41.00854,-92.39626 +/-100m); p18__3 (tier 1, 41.00986,-92.39446 +/-143m); p19 (tier 3, 41.00623,-92.39343 +/-620m); p22__2 (tier 1, 41.01306,-92.40344 +/-134m); p23__1 (tier 1, 41.01006,-92.41625 +/-114m); p23__3 (tier 1, 40.99448,-92.42926 +/-100m); p2__1 (tier 1, 41.02912,-92.42636 +/-246m); p2__2 (tier 1, 41.03103,-92.42535 +/-100m); p2__3 (tier 1, 41.02961,-92.42374 +/-102m); p30__3 (tier 1, 40.99524,-92.41064 +/-100m); p32__2 (tier 3, 41.00605,-92.41326 +/-620m); p32__3 (tier 1, 41.00451,-92.41390 +/-128m); p33__1 (tier 3, 41.00451,-92.37446 +/-620m); p33__2 (tier 1, 41.00585,-92.37465 +/-100m); p33__3 (tier 1, 41.00476,-92.37589 +/-100m); p33__4 (tier 1, 41.00523,-92.37611 +/-113m); p33__5 (tier 1, 41.00546,-92.37427 +/-100m); p33__6 (tier 1, 41.00557,-92.37338 +/-143m); p33__7 (tier 1, 41.00517,-92.37525 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1595.3,1806.6 1560.8,1792.6 445.1,1856.3 317.1,1818.8 264.4,1912.0 263.9,1912.0 110.1,1318.0 146.3,1317.7 151.0,986.4 157.8,797.4 156.7,465.1 156.6,442.0 158.2,97.7 834.8,92.9 921.2,89.1 1612.0,141.1 1612.0,152.8 1612.0,153.9 1469.9,165.2 1521.3,475.8 1495.7,476.5 1492.7,791.4 1512.7,876.0 1515.2,1237.5 1495.8,1319.0 1500.0,1695.8 1595.3,1806.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[837.0,1316.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.41394377538658,41.01879934342322]}},{"type":"Feature","properties":{"resourceCoords":[834.0,483.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.41251714058538,41.01990978107806]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p11","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1382.9,1869.5 319.3,1844.1 235.6,1809.5 136.8,1696.0 140.1,1697.0 138.6,1316.2 158.7,1234.0 158.7,868.8 139.2,783.2 144.4,465.1 170.2,464.6 120.5,150.5 264.1,140.1 264.2,127.2 347.6,134.1 808.3,100.7 809.5,73.4 1501.3,73.0 1498.5,110.1 1502.3,425.3 1490.0,784.9 1490.0,1814.0 1385.7,1902.0 1382.9,1869.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[784.0,784.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4107572,41.0178228]}},{"type":"Feature","properties":{"resourceCoords":[1490.0,1580.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4108631,41.015869]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p12","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1379.6,1814.7 1271.0,1869.0 755.0,1803.5 492.8,1865.5 131.0,1761.7 66.9,1622.3 31.5,1208.2 134.3,1121.3 133.0,106.0 817.0,106.0 1270.5,115.9 1496.1,114.3 1495.8,624.7 1507.4,624.7 1519.7,1737.1 1484.8,1736.4 1443.7,1881.1 1379.6,1814.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[817.0,106.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4083047,41.0160369]}},{"type":"Feature","properties":{"resourceCoords":[133.0,106.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4095199,41.0169218]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.83"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1128.3,1880.8 681.2,1874.5 6.7,1879.6 15.6,1529.7 9.2,1223.1 11.7,1187.1 9.4,841.5 16.4,143.9 696.4,137.7 754.1,96.2 1612.0,128.6 1612.0,198.1 1341.8,466.4 1546.5,1173.3 1416.1,1174.4 1367.1,1877.5 1350.9,1877.7 1128.3,1880.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[683.0,1184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.40709137285737,41.01696621765936]}},{"type":"Feature","properties":{"resourceCoords":[40.0,470.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.40699011622475,41.01877983933466]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"77.5,1804.8 778.8,1804.0 838.8,1761.7 1612.0,1797.2 1612.0,1591.3 1591.5,1568.8 1610.8,1006.0 1612.0,949.0 1593.2,916.4 1550.2,129.1 1239.1,50.5 1180.4,127.5 1104.1,27.2 156.2,30.7 150.5,1.0 118.8,1.0 70.3,223.1 68.7,221.2 79.1,828.4 27.1,879.7 1.0,913.9 1.0,934.9 30.2,997.9 67.5,1231.2 78.9,1349.9 77.5,1804.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[888.0,278.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4024718014341,41.0202337357502]}},{"type":"Feature","properties":{"resourceCoords":[86.0,777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.40471425070051,41.02059537206307]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p15","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"625.0,119.1 1338.3,105.2 1523.1,101.6 1548.2,1265.8 1522.9,1265.4 1537.6,1877.8 337.0,1867.8 74.0,1766.4 46.9,1403.4 35.5,1391.7 76.1,1245.0 111.4,1245.5 91.5,120.1 625.0,119.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[771.0,1242.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4086962,41.0120967]}},{"type":"Feature","properties":{"resourceCoords":[771.0,116.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4067751,41.0135791]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0016__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p16 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0016__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"71.6,1870.6 696.8,1882.8 919.8,1831.0 946.3,1265.2 945.7,1200.0 949.3,1200.0 949.5,1197.0 1393.2,1196.6 1560.0,1117.8 1527.0,745.5 1589.0,514.8 1445.2,248.4 1529.2,188.4 1494.3,158.8 1494.3,130.8 1536.0,85.7 1297.7,61.5 1161.7,103.4 1017.5,120.0 655.0,108.0 228.8,100.8 76.7,102.0 88.8,1261.4 63.7,1260.8 71.6,1870.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0016__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[655.0,1261.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4063774,41.0103418]}},{"type":"Feature","properties":{"resourceCoords":[655.0,108.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4044243,41.0118827]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"97.4,921.9 105.0,771.5 104.2,652.8 397.2,45.8 582.0,43.2 582.1,8.1 1546.2,38.3 1547.6,297.7 1539.6,652.0 1547.4,1262.1 1547.4,1518.7 1541.3,1518.5 1566.5,1807.5 1387.2,1808.3 1286.0,1874.0 97.1,1850.4 46.1,1792.6 37.6,1531.7 122.8,1125.4 49.6,980.8 39.1,983.1 97.4,921.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[100.0,1029.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.40034992682332,41.01028451426635]}},{"type":"Feature","properties":{"resourceCoords":[100.0,50.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.40033897134064,41.012106510305365]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0018__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p18 [1]","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":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0018__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"108.9,1780.0 197.2,1779.1 414.3,1877.7 1574.0,1858.5 1575.0,1260.5 1494.9,1182.1 1493.7,1059.7 1403.2,1024.6 1392.0,988.7 1133.1,1027.4 1074.8,983.0 1071.5,983.0 1071.5,980.5 1067.8,977.7 1041.0,480.9 975.4,459.8 955.5,459.8 955.5,453.4 954.2,453.0 899.5,43.0 78.4,22.0 81.3,279.8 75.5,631.9 86.8,1238.2 88.2,1493.2 82.2,1492.9 108.9,1780.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0018__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[570.0,1476.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.39558957841292,41.009383714239604]}},{"type":"Feature","properties":{"resourceCoords":[76.0,1476.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.39681549945459,41.00939332444114]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0020","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"917.3,1896.0 1240.7,1891.7 1240.7,1868.2 1266.6,1867.9 1267.2,1889.2 1604.7,1882.9 1604.5,1875.7 1603.4,1701.5 1595.4,1027.9 1480.0,460.0 1529.2,409.5 1379.1,261.5 1395.0,245.8 1410.5,230.5 1403.7,1.0 1397.2,1.0 1370.9,48.0 1170.9,13.9 48.6,33.5 25.1,82.9 24.1,1268.3 34.4,1268.1 37.7,1538.4 40.7,1710.5 270.0,1721.7 422.6,1717.5 495.6,1713.3 916.5,1749.6 917.2,1882.0 917.3,1896.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1015.0,1347.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.41385270592917,41.023745535148315]}},{"type":"Feature","properties":{"resourceCoords":[40.0,1709.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.41845549000705,41.02533349455565]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.71"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0021","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1570.5,511.4 1594.0,398.8 1609.8,398.7 1547.5,88.1 1481.9,95.4 1421.9,50.2 1403.3,73.7 1311.8,38.7 980.9,56.8 262.2,13.5 78.3,38.1 23.6,133.9 28.8,376.9 13.1,392.2 1.0,409.6 1.0,412.1 147.3,558.7 97.2,609.3 209.2,1183.8 211.8,1864.4 557.5,1860.9 601.6,1858.8 996.7,1887.4 1229.5,1868.2 1230.0,1854.4 1579.8,1850.7 1578.4,1671.1 1581.5,1308.5 1580.1,1079.3 1573.8,1019.5 1553.9,902.1 1538.3,860.6 1534.1,860.3 1551.8,842.5 1577.8,816.5 1569.7,510.6 1570.5,511.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1214.0,1493.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.40834687159847,41.019708746552574]}},{"type":"Feature","properties":{"resourceCoords":[219.0,1862.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4130119627537,41.02128611047325]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0022__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p22 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0022__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"29.0,826.6 26.0,1042.0 20.5,1225.3 29.1,1298.2 50.5,1366.9 38.6,1487.3 59.3,1506.3 134.3,1807.7 289.4,1912.0 289.6,1912.0 332.4,1912.0 390.5,1862.0 433.9,1820.0 760.3,1714.8 826.1,1781.9 839.0,1769.6 829.0,1758.5 950.0,1570.4 971.2,1555.2 991.9,1560.8 1050.9,1478.5 1070.6,1403.2 1168.5,1304.0 1168.8,1303.0 1230.2,1106.3 1590.6,810.8 1612.0,501.8 1612.0,495.6 1577.5,132.4 1612.0,112.7 1612.0,112.0 1585.5,110.9 1303.6,101.0 1292.3,111.2 1189.2,111.1 1186.7,166.8 1150.8,166.5 1013.5,25.7 647.5,128.0 647.5,60.7 284.6,32.1 284.6,23.7 24.7,23.1 23.0,297.6 27.1,656.7 29.0,826.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0022__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[639.0,368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.40471846569815,41.015208121789875]}},{"type":"Feature","properties":{"resourceCoords":[34.0,1046.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.404383572637,41.01189366403315]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0023__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p23 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.42"},{"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":"7652.0"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0023__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0023","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"47.8,1607.8 87.9,1611.6 302.9,1875.4 364.3,1902.6 418.8,1905.5 500.5,1889.6 498.1,1874.9 736.0,1886.6 736.0,1874.7 1400.8,1824.3 1428.4,1704.2 1322.6,1678.1 1318.3,1453.1 1268.8,1375.2 1211.3,1368.9 1184.2,1368.6 1184.7,1366.0 1183.0,1365.8 1182.7,1235.4 1227.7,1023.0 1255.4,1004.8 1258.7,988.0 1281.0,988.0 1407.2,905.0 1440.3,734.8 1565.8,581.9 1612.0,159.6 1564.1,67.4 1207.7,13.9 836.4,31.2 691.0,102.2 301.6,747.8 47.4,951.8 47.8,1607.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0023__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[784.0,1558.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.41622697997255,41.01000294187644]}},{"type":"Feature","properties":{"resourceCoords":[483.0,1167.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.41707540504677,41.01066973035596]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0024","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"45.5,1813.5 537.1,1822.9 537.1,1814.8 1566.6,1828.3 1565.0,1784.0 1611.3,1016.0 1542.0,214.7 1300.2,226.2 1304.2,240.8 1223.0,264.9 1167.6,267.4 1102.8,245.8 860.5,1.0 818.6,1.0 818.8,3.3 583.5,88.2 284.1,33.2 106.7,170.1 30.0,447.2 26.3,740.8 39.9,741.0 37.7,976.8 56.7,978.1 45.5,1813.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[552.0,1008.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.41865046691852,41.00789635825345]}},{"type":"Feature","properties":{"resourceCoords":[59.0,1008.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.41985451849538,41.00788495280421]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p25","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0025","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"34.6,959.7 46.2,959.8 52.2,146.6 542.0,153.1 542.0,145.0 1568.0,152.2 1610.3,1180.5 1555.3,1778.1 1482.1,1828.7 1248.7,1819.9 1139.8,1753.5 891.8,1744.7 840.4,1802.7 665.6,1757.8 497.2,1858.8 37.7,1848.5 32.0,1870.8 34.6,959.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[542.0,1728.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.418637,41.003481]}},{"type":"Feature","properties":{"resourceCoords":[542.0,145.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4186622,41.006409]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p26","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0026","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"39.7,1014.6 77.7,1307.8 56.7,1327.8 59.3,1444.0 58.0,1856.0 1514.0,1856.0 1525.4,1856.0 1525.4,232.8 1506.8,231.8 1505.7,1.0 1492.4,1.0 1492.5,78.3 370.1,36.1 75.2,108.3 32.3,374.5 97.3,770.0 39.7,1014.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[58.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.423511,41.0048983]}},{"type":"Feature","properties":{"resourceCoords":[1514.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4198928,41.004896]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p27","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0027","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1551.6,1145.5 1542.7,1181.6 1543.7,1700.3 1554.7,1700.4 1555.1,1766.4 1456.0,1725.0 1298.5,1727.0 1165.6,1723.0 527.0,1720.6 72.6,1722.3 69.4,867.0 68.9,690.8 67.7,234.4 1546.6,232.7 1551.6,1145.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0027/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1054.0,1724.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.42110498762698,41.00214443647553]}},{"type":"Feature","properties":{"resourceCoords":[86.0,240.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.42346614522043,41.004887856592944]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p28","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0028","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1484.4,1226.2 1502.8,1376.9 1502.0,1544.7 1612.0,1545.5 1612.0,1565.7 1612.0,1569.8 1564.6,1571.9 1511.0,1886.0 70.5,1853.0 30.1,448.4 98.5,98.1 397.0,62.0 417.1,83.5 535.2,81.9 954.1,86.8 1410.9,89.9 1529.0,90.8 1514.8,1069.2 1406.5,1072.4 1406.9,1105.2 1450.2,1152.7 1484.4,1226.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[985.0,1563.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.42711858460846,41.004820371512956]}},{"type":"Feature","properties":{"resourceCoords":[957.0,83.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.42350167186635,41.00489302190072]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p29","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.76"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0029","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"49.2,934.6 73.8,935.1 72.2,1060.4 551.7,1536.7 551.0,1585.0 1072.5,1272.8 1072.8,1254.4 1076.6,1063.4 1111.0,1064.1 1219.3,1066.2 1508.2,1840.7 1524.0,1883.0 1549.0,1883.0 1563.4,1072.8 1578.0,195.9 1579.0,136.2 576.9,110.9 574.9,1.0 540.0,1.0 492.1,43.9 416.4,78.0 261.8,95.2 90.0,92.6 87.9,205.2 63.0,205.0 76.1,576.2 49.2,934.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[104.0,98.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.42703035586102,41.00385770335753]}},{"type":"Feature","properties":{"resourceCoords":[1552.0,1014.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.42353576755221,41.00225659082295]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.50"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"761.8,216.0 369.8,110.8 91.8,387.8 25.9,1052.5 73.1,1542.5 16.8,1764.0 1.0,1763.8 1.0,1771.9 549.0,1813.0 548.6,1798.9 804.0,1795.4 1064.2,1794.5 1323.2,1780.2 1501.3,1775.3 1058.3,1309.7 1059.2,1110.2 884.5,1124.4 757.6,224.2 761.8,216.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42710111632248,41.0270982164011]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42431897768382,41.02921953411285]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42100748054114,41.026712724759136]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.42378961917979,41.02459140704739]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p30 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.08"},{"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":"3006.0"},{"label":"split_canvas_h","value":"2240.0"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"395.2,557.0 533.7,451.6 698.5,464.9 729.5,239.7 639.3,201.0 632.8,102.1 487.8,36.0 32.9,35.7 32.6,510.6 210.7,490.9 395.2,557.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[729.5,35.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4312653,41.0029442]}},{"type":"Feature","properties":{"resourceCoords":[729.5,499.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4312645,41.0019952]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p30 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"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":"7652.0"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"841.7,18.7 754.1,51.8 752.0,559.6 751.5,559.6 751.5,560.0 709.4,560.0 244.2,564.8 90.8,594.5 40.3,788.2 39.8,1847.5 127.7,1887.5 493.0,1879.0 520.9,1458.9 522.0,1455.6 862.8,1453.2 1176.5,1450.9 1178.6,1453.2 1176.5,1810.2 1187.1,1866.0 1249.3,1891.3 1581.7,1857.5 1589.0,1864.0 1583.8,446.6 1571.6,446.9 1414.5,51.9 1384.7,52.0 1361.7,52.0 1345.0,52.0 1345.1,145.2 1345.1,154.2 1094.2,311.8 1094.0,288.2 855.2,61.1 854.7,1.0 842.7,1.0 841.7,18.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0030__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1095.0,455.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.42589671676606,41.000666603535294]}},{"type":"Feature","properties":{"resourceCoords":[491.0,776.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.42885696107055,40.999487943778945]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p31","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0031","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"41.8,425.8 41.7,28.9 269.9,28.5 590.8,30.5 657.5,32.7 736.6,31.9 786.4,52.8 786.2,19.6 1456.2,27.2 1573.6,64.0 1591.6,970.5 1569.2,1851.3 1231.4,1887.8 240.3,1887.4 67.7,1872.7 42.1,1849.8 41.8,425.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0031/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1315.0,823.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.41730310105571,40.99923416988133]}},{"type":"Feature","properties":{"resourceCoords":[296.0,1579.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.42226410884108,40.99645378344447]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0032__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p32 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"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":"2212.0"},{"label":"split_canvas_h","value":"3532.8"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0032__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0032","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"94.5,791.0 500.4,809.7 371.4,455.1 355.7,323.6 392.6,307.2 379.8,239.8 340.0,115.2 275.9,112.2 73.8,136.4 94.5,791.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0032__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[110.0,851.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.41480248080865,41.00350579380883]}},{"type":"Feature","properties":{"resourceCoords":[110.0,122.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.414885134902,41.004860087859896]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1286.2,1828.8 1214.1,1829.8 777.2,1352.9 782.6,1151.6 605.9,1163.2 497.9,252.6 520.3,231.9 655.5,138.2 657.0,65.3 985.8,25.1 1355.2,37.8 1519.5,155.7 1580.5,1750.2 1612.0,1751.7 1612.0,1834.8 1286.2,1828.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1281.0,1147.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.42252215840396,41.02770090641252]}},{"type":"Feature","properties":{"resourceCoords":[263.0,1834.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.42303075580737,41.025483730468906]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p5","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"113.0,1863.9 812.9,1850.8 812.9,1854.8 1499.5,1868.0 1499.6,1859.5 1493.4,1599.7 1502.8,1241.3 1502.7,873.4 1503.1,533.5 1506.3,1.0 1486.0,1.0 1485.8,8.7 1346.3,62.4 106.8,33.2 59.1,37.6 25.5,768.9 107.3,769.8 101.8,1090.7 105.1,1338.9 115.7,1596.8 113.0,1855.7 113.0,1863.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[813.0,1600.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4209256,41.025243]}},{"type":"Feature","properties":{"resourceCoords":[107.0,37.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4195088,41.0282483]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p6","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"99.0,868.3 149.8,322.4 135.8,322.4 136.9,76.1 838.1,65.5 838.0,69.6 1525.8,85.4 1522.0,325.0 1518.4,1193.1 1507.4,1192.9 1545.2,1854.8 124.2,1885.1 63.7,1832.3 91.0,868.1 99.0,868.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[837.0,325.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4217972,41.02456]}},{"type":"Feature","properties":{"resourceCoords":[1522.0,325.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4205779,41.0236818]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p7","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.45"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"503.9,1845.5 98.3,1803.5 140.8,1711.6 79.5,1690.2 162.2,1660.5 169.7,1501.3 31.2,1129.0 1.4,128.1 663.5,84.8 663.3,95.8 1532.0,92.0 1532.0,1574.3 1532.0,1818.9 661.1,1828.3 664.8,1839.5 548.1,1891.0 503.9,1845.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1532.0,1819.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4175308,41.0214497]}},{"type":"Feature","properties":{"resourceCoords":[1532.0,92.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4205779,41.0236818]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p8","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"462.2,95.7 723.3,84.5 1084.0,87.2 1454.0,80.0 1432.0,535.4 1433.3,582.9 1440.5,838.5 1449.0,983.3 1377.3,1819.2 1345.8,1819.3 1114.4,1820.6 1042.0,1821.3 498.2,1825.4 237.7,1830.2 234.2,1584.7 213.0,97.4 462.2,95.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[744.0,1309.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4175574,41.0227931]}},{"type":"Feature","properties":{"resourceCoords":[1454.0,80.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4184584,41.0253278]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ottumwa, Iowa | 1917 | sanborn02790_006 p9","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:16:48Z","modified":"2026-10-19T05:16:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"164.8,1741.3 175.9,1737.6 226.7,1852.9 269.3,1811.6 410.6,1874.7 1106.3,1880.2 1198.1,1851.2 1235.0,1765.3 1453.7,1743.3 1604.5,1478.4 1454.2,890.1 1490.0,890.0 1495.7,562.6 1503.0,375.8 1503.0,47.4 1502.9,38.8 843.3,41.6 842.6,1.0 792.0,1.0 791.4,45.8 159.2,45.2 158.9,89.1 155.1,624.5 156.0,881.0 164.8,1741.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154om:g027901917:02790_1917-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[156.0,374.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.416652,41.0221332]}},{"type":"Feature","properties":{"resourceCoords":[1490.0,890.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.4151627,41.0196929]}}]}}]}