{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn04399_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Thief River Falls, Minnesota | 1916 | 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":"16"},{"label":"placed","value":"12"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 9, georef-snap 2, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"5 sheet(s) cut into 11 panels"},{"label":"unplaced pages","value":"p6__2 (tier 1, 48.11712,-96.18252 +/-136m); p7__2 (tier 1, 48.11306,-96.17433 +/-119m); p7__3 (tier 1, 48.11787,-96.17727 +/-100m); p9__1 (tier 1, 48.11936,-96.18806 +/-255m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Thief River Falls, Minnesota | 1916 | sanborn04399_004 p10","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:10:11Z","modified":"2026-10-19T05:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"614.6,1876.5 573.2,1863.7 380.8,1863.8 380.6,1858.3 91.2,1875.4 41.3,1831.2 84.2,1412.8 55.4,46.7 858.0,16.1 1536.1,92.0 1558.5,1855.5 615.4,1876.4 614.6,1876.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[564.0,1005.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.1734105,48.1156307]}},{"type":"Feature","properties":{"resourceCoords":[1048.0,1858.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.172019,48.1140527]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Thief River Falls, Minnesota | 1916 | sanborn04399_004 p1 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.62"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3430.4"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4221.6"}],"created":"2026-10-19T05:10:11Z","modified":"2026-10-19T05:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"920.4,919.7 920.4,923.8 920.4,926.5 346.6,925.5 346.4,900.9 1.0,961.3 1.0,961.8 57.8,981.0 72.8,1912.0 1546.6,1873.8 1595.8,1688.3 1509.0,1379.3 1573.8,1237.8 1561.7,949.8 1612.0,950.5 1612.0,938.2 1210.1,898.1 1210.2,909.5 920.4,919.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,857.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.1840594781153,48.115904836815496]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,857.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.17968306414568,48.11585815441383]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.17972851981234,48.11393177132615]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.18410493378197,48.11397845372782]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Thief River Falls, Minnesota | 1916 | sanborn04399_004 p2","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:10:11Z","modified":"2026-10-19T05:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"26.6,499.5 75.2,30.2 1236.3,21.4 1501.9,98.2 1502.0,191.9 1572.4,191.8 1565.5,729.2 1562.5,729.2 1575.5,1276.6 1575.0,1830.0 1311.0,1830.4 1020.5,1830.7 729.2,1834.9 33.5,1838.1 26.6,499.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[726.0,730.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.183085,48.1242484]}},{"type":"Feature","properties":{"resourceCoords":[726.0,192.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.183074,48.1252233]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Thief River Falls, Minnesota | 1916 | sanborn04399_004 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:10:11Z","modified":"2026-10-19T05:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"84.9,1839.7 947.2,1831.6 1511.9,1834.0 1509.9,1280.3 1517.7,689.2 1516.2,292.0 1500.4,122.6 1403.0,33.8 926.6,88.9 285.5,25.9 10.4,109.5 1.0,106.8 1.0,200.2 70.5,200.3 62.8,738.0 59.8,738.0 72.1,1285.8 71.0,1839.7 84.9,1839.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[384.0,730.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.17993469003649,48.12424933380819]}},{"type":"Feature","properties":{"resourceCoords":[1502.0,1852.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.17692096953782,48.12220509372461]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Thief River Falls, Minnesota | 1916 | sanborn04399_004 p4","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:10:11Z","modified":"2026-10-19T05:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"730.0,95.0 1016.3,91.8 1302.0,92.5 1555.1,92.9 1569.5,659.6 1560.2,1223.3 1568.9,1223.2 1570.5,1788.2 1302.0,1787.0 731.2,1789.8 731.3,1814.4 107.7,1853.3 49.0,1809.6 45.9,95.8 730.0,95.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[730.0,1227.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.1831118,48.1201595]}},{"type":"Feature","properties":{"resourceCoords":[730.0,95.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.1830987,48.1222462]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Thief River Falls, Minnesota | 1916 | sanborn04399_004 p5","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T05:10:11Z","modified":"2026-10-19T05:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"948.5,1797.5 383.5,1801.8 102.8,1800.3 88.0,1800.3 86.8,1232.2 78.0,1232.3 87.9,665.3 73.9,95.4 94.2,95.5 946.1,90.0 1504.0,94.0 1503.5,660.3 1505.3,1226.8 1511.8,1800.0 948.5,1797.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[382.0,1231.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.1799848,48.1201603]}},{"type":"Feature","properties":{"resourceCoords":[1504.0,94.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.1768938,48.1222375]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Thief River Falls, Minnesota | 1916 | sanborn04399_004 p6 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"15"},{"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":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T05:10:11Z","modified":"2026-10-19T05:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1569.1,1139.5 1564.6,1139.5 1548.9,1139.8 1572.6,589.4 1565.3,589.4 1560.2,26.4 1284.9,25.8 720.7,29.8 720.9,54.1 726.3,53.8 742.3,299.6 696.5,557.5 696.5,570.0 694.3,570.0 693.4,574.7 433.1,590.8 407.4,1090.0 403.5,1090.7 403.5,1095.5 373.9,1095.5 38.9,1150.2 100.8,1808.0 369.5,1862.2 729.5,1802.5 729.5,1826.5 1286.8,1832.8 1286.8,1830.2 1286.8,1826.2 1568.4,1819.0 1569.1,1139.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1284.0,1143.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.1815608,48.1170392]}},{"type":"Feature","properties":{"resourceCoords":[166.0,37.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.1846648,48.1191151]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0007__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Thief River Falls, Minnesota | 1916 | sanborn04399_004 p7 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T05:10:11Z","modified":"2026-10-19T05:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"86.5,1808.2 476.6,1856.6 477.3,1868.7 673.7,1875.9 971.6,1776.7 936.1,1682.2 1011.0,1363.9 1053.2,1348.6 1053.3,1330.0 1104.5,1330.0 1265.3,1271.6 1282.3,938.4 1406.2,839.8 1494.3,840.4 1573.0,831.9 1578.8,801.3 1558.5,801.4 1506.4,38.2 1495.0,38.0 940.4,29.5 384.0,27.7 107.6,23.3 103.0,23.2 100.2,587.4 107.5,587.4 76.2,1138.5 91.9,1138.5 96.4,1138.5 86.5,1808.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[370.0,1139.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.1800015,48.1170453]}},{"type":"Feature","properties":{"resourceCoords":[1495.0,38.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.1768879,48.1191105]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0007__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Thief River Falls, Minnesota | 1916 | sanborn04399_004 p7 [4]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.89"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4196.8"},{"label":"split_canvas_y","value":"6572.0"},{"label":"split_canvas_w","value":"951.2"},{"label":"split_canvas_h","value":"1080.0"}],"created":"2026-10-19T05:10:11Z","modified":"2026-10-19T05:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0007__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1286.0,1665.3 1286.0,1660.3 1050.8,1662.0 1050.8,1662.2 1060.5,1898.5 1280.2,1908.3 1282.8,1673.8 1286.0,1673.7 1286.0,1665.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0007__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1049.2,1643.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.17388411947232,48.1140569839953]}},{"type":"Feature","properties":{"resourceCoords":[1287.0,1643.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.17322826525363,48.11406192975239]}},{"type":"Feature","properties":{"resourceCoords":[1287.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.17321986640283,48.11356488688398]}},{"type":"Feature","properties":{"resourceCoords":[1049.2,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.17387572062152,48.11355994112689]}},{"type":"Feature","properties":{"resourceCoords":[1244.0,1661.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.1733462,48.1140279]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0008__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Thief River Falls, Minnesota | 1916 | sanborn04399_004 p8 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"3258.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T05:10:11Z","modified":"2026-10-19T05:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"785.4,152.1 385.5,58.7 171.4,97.2 162.3,1.0 132.8,1.0 133.1,68.3 125.8,655.3 128.2,1205.2 129.8,1774.4 130.2,1842.8 681.4,1802.6 681.2,1777.5 730.8,1777.5 785.4,152.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[675.6,1226.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.1753980535875,48.1221926119774]}},{"type":"Feature","properties":{"resourceCoords":[129.9,1226.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.17688947564123,48.12219954232066]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0008__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Thief River Falls, Minnesota | 1916 | sanborn04399_004 p8 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.69"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3258.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3194.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T05:10:11Z","modified":"2026-10-19T05:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0008__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"983.6,1912.0 993.0,1863.1 1498.8,1810.7 1476.6,1182.0 1557.2,1067.3 1577.5,518.6 1552.8,121.1 1495.6,62.7 1496.5,45.8 1448.1,45.0 1447.8,69.5 909.1,99.3 903.9,588.5 902.4,1151.0 913.8,1151.2 963.4,1912.0 983.6,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0008__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[902.5,1151.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.1768879,48.1191105]}},{"type":"Feature","properties":{"resourceCoords":[1448.1,45.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.175393,48.1211869]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0009__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Thief River Falls, Minnesota | 1916 | sanborn04399_004 p9 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"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":"0.0"},{"label":"split_canvas_w","value":"1793.2"},{"label":"split_canvas_h","value":"2130.0"}],"created":"2026-10-19T05:10:11Z","modified":"2026-10-19T05:10:11Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0009__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"349.2,28.9 26.5,45.4 29.1,492.8 308.0,505.9 386.5,124.0 349.2,28.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144tm:g043991916:04399_1916-0009__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.18800144031978,48.11901270426252]}},{"type":"Feature","properties":{"resourceCoords":[448.3,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.18676683360464,48.11900788740274]}},{"type":"Feature","properties":{"resourceCoords":[448.3,532.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.1867753960517,48.11802848317028]}},{"type":"Feature","properties":{"resourceCoords":[0.0,532.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.18801000276684,48.11803330003006]}},{"type":"Feature","properties":{"resourceCoords":[86.0,507.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.1877726,48.1180784]}}]}}]}