{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02822_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Sheldon, Iowa | 1918 | 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":"14"},{"label":"placed","value":"11"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef-snap 4, georef 4, snap:0 2, snap:1 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"1 sheet(s) cut into 3 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 43.18403,-95.86240 +/-129m); p1__3 (tier 1, 43.18077,-95.84303 +/-100m); p4__3 (tier 1, 43.17902,-95.85606 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sheldon, Iowa | 1918 | sanborn02822_005 p1 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.10"},{"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":"5176.0"}],"created":"2026-10-19T13:23:51Z","modified":"2026-10-19T13:23:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1612.0,271.6 1577.5,271.1 1435.6,127.9 1339.8,155.4 1013.1,51.8 834.6,68.5 653.7,183.2 381.4,121.9 141.7,254.7 69.3,446.6 173.3,870.2 511.4,905.5 839.3,1031.7 933.3,1260.2 1081.2,1230.0 1030.7,1119.7 1075.0,1109.8 1087.1,763.0 1386.7,742.5 1423.6,332.6 1612.0,323.5 1612.0,271.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.84105193108991,43.183773454441976]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.84125589431778,43.18086207657954]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1294.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.84443639143223,43.18098223529136]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1294.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.84423242820435,43.1838936131538]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0001__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sheldon, Iowa | 1918 | sanborn02822_005 p1 [4]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.11"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3320.0"},{"label":"split_canvas_y","value":"5176.0"},{"label":"split_canvas_w","value":"1292.0"},{"label":"split_canvas_h","value":"2476.0"}],"created":"2026-10-19T13:23:51Z","modified":"2026-10-19T13:23:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0001__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"830.0,1357.0 916.0,1342.5 861.0,1531.9 913.1,1779.3 851.8,1816.5 860.3,1892.5 1134.0,1888.0 1060.6,1801.0 1052.0,1593.3 1128.2,1410.0 1111.2,1334.5 1041.5,1337.3 1042.6,1294.0 1020.0,1294.0 1011.5,1294.0 1013.3,1323.6 884.0,1294.0 830.0,1294.0 830.0,1357.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0001__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[830.0,1294.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.84252902880735,43.180445561572476]}},{"type":"Feature","properties":{"resourceCoords":[1153.0,1294.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.8416730510591,43.18041969553245]}},{"type":"Feature","properties":{"resourceCoords":[1153.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.84174055338345,43.179215075873586]}},{"type":"Feature","properties":{"resourceCoords":[830.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.84259653113168,43.17924094191361]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0001__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sheldon, Iowa | 1918 | sanborn02822_005 p1 [5]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.10"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5656.0"},{"label":"split_canvas_w","value":"3320.0"},{"label":"split_canvas_h","value":"1996.0"}],"created":"2026-10-19T13:23:51Z","modified":"2026-10-19T13:23:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0001__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"751.3,1715.3 684.5,1716.5 683.5,1659.2 712.4,1521.6 681.0,1524.0 680.5,1491.1 430.1,1489.0 429.1,1489.0 429.5,1540.0 244.2,1550.3 214.4,1912.0 763.2,1912.0 787.9,1910.1 751.3,1715.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0001__5/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1414.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.84167303158638,43.18166783529416]}},{"type":"Feature","properties":{"resourceCoords":[830.0,1414.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.84179519486375,43.18014600374046]}},{"type":"Feature","properties":{"resourceCoords":[830.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.8430411135319,43.18019993772089]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-95.84291895025453,43.181721769274596]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sheldon, Iowa | 1918 | sanborn02822_005 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:23:51Z","modified":"2026-10-19T13:23:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1069.5,1859.8 547.4,1854.2 6.8,1853.5 5.8,1263.1 24.9,1263.0 48.5,51.5 1014.0,23.9 1245.1,220.9 1459.7,95.8 1543.7,151.9 1596.2,151.7 1612.0,373.1 1609.8,720.4 1607.7,1045.6 1609.5,1254.5 1610.3,1862.5 1069.5,1859.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[549.0,1252.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.85394339101649,43.1830547591109]}},{"type":"Feature","properties":{"resourceCoords":[1581.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.85183844475584,43.1813771166953]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sheldon, Iowa | 1918 | sanborn02822_005 p3","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:23:51Z","modified":"2026-10-19T13:23:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"584.1,1845.5 46.5,1851.4 39.9,1234.3 36.0,1022.3 35.1,692.3 35.9,536.8 35.2,354.1 15.9,115.2 37.9,114.9 64.0,53.7 300.4,107.6 591.6,23.2 1513.1,42.2 1591.0,169.0 1612.0,426.6 1612.0,430.4 1594.5,1832.5 1612.0,1832.9 1612.0,1840.6 1176.0,1846.2 584.1,1845.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[580.0,1232.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.8499837,43.1821618]}},{"type":"Feature","properties":{"resourceCoords":[1164.0,393.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.8479077,43.1833286]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sheldon, Iowa | 1918 | sanborn02822_005 p4 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3126.8"},{"label":"split_canvas_h","value":"2565.6"}],"created":"2026-10-19T13:23:51Z","modified":"2026-10-19T13:23:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"683.7,614.7 677.0,21.9 26.3,31.5 80.5,463.5 31.1,591.4 67.8,621.0 342.5,619.8 683.7,614.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[675.8,600.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.85575881692952,43.182294354172065]}},{"type":"Feature","properties":{"resourceCoords":[675.8,29.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.85531240608108,43.183323922893784]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sheldon, Iowa | 1918 | sanborn02822_005 p4 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.94"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T13:23:51Z","modified":"2026-10-19T13:23:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"896.8,39.2 822.0,126.4 894.8,357.8 781.6,640.2 63.9,641.5 29.1,697.4 76.9,1206.0 47.8,1851.0 196.0,1894.1 503.7,1849.7 518.5,1489.7 518.2,1472.7 519.1,1472.7 519.2,1470.8 875.9,1463.4 913.2,1469.4 913.6,1494.9 913.6,1496.8 913.8,1511.0 937.8,1541.2 971.1,1837.4 1530.2,1863.8 1530.1,1860.7 1532.4,1249.5 1524.0,641.1 1513.0,33.9 1171.7,38.5 896.8,39.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[652.0,1266.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.8588381,43.1805305]}},{"type":"Feature","properties":{"resourceCoords":[652.0,38.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.857883,43.182745]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sheldon, Iowa | 1918 | sanborn02822_005 p5","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:23:51Z","modified":"2026-10-19T13:23:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1339.0,1902.6 798.4,1894.6 243.2,1888.7 255.0,1258.0 255.7,630.1 253.8,3.4 813.8,7.9 1354.5,17.6 1369.2,17.7 1354.5,1902.7 1339.0,1902.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[805.0,634.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.854876,43.1808685]}},{"type":"Feature","properties":{"resourceCoords":[255.0,1258.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.856648,43.180061]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sheldon, Iowa | 1918 | sanborn02822_005 p6","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:23:51Z","modified":"2026-10-19T13:23:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"511.8,1885.7 1524.8,1885.5 1612.0,1810.7 1612.0,46.0 1063.2,40.6 530.0,42.0 1.0,39.9 1.0,1871.1 511.8,1871.0 511.8,1885.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[530.0,1871.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.8531535,43.1780608]}},{"type":"Feature","properties":{"resourceCoords":[530.0,42.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.8517667,43.1813581]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sheldon, Iowa | 1918 | sanborn02822_005 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:23:51Z","modified":"2026-10-19T13:23:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6.2,1810.8 95.5,1881.2 347.1,1878.6 1569.8,1863.1 1612.0,1358.6 1612.0,1353.8 1561.7,52.6 477.4,19.1 476.4,26.8 38.0,28.6 1.0,28.2 1.0,1815.3 6.2,1810.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[627.0,637.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.84801892022371,43.179328299828526]}},{"type":"Feature","properties":{"resourceCoords":[53.0,1865.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.8503355283011,43.17745705322091]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Sheldon, Iowa | 1918 | sanborn02822_005 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:23:51Z","modified":"2026-10-19T13:23:51Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3.5,41.0 548.6,40.3 1079.5,41.7 1612.0,39.4 1612.0,54.2 1599.8,54.2 1576.9,977.7 1515.5,1072.5 1515.6,1413.2 1582.7,1604.4 1520.3,1866.1 45.1,1871.1 44.9,46.2 3.6,44.1 3.5,41.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154sm:g028221918:02822_1918-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1064.0,36.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.85453464335643,43.1783808091617]}},{"type":"Feature","properties":{"resourceCoords":[1571.0,36.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-95.85329609103766,43.178099601550976]}}]}}]}