{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02690_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Humeston, Iowa | 1893 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"7"},{"label":"placed","value":"4"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 3, snap:0 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p2__2 (tier 1, 40.85775,-93.49335 +/-100m); p2__3 (tier 1, 40.86143,-93.49397 +/-100m); p2__6 (tier 1, 40.86009,-93.49271 +/-119m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Humeston, Iowa | 1893 | sanborn02690_001 p1","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T18:39:38Z","modified":"2026-10-18T18:39:38Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1550.0,1762.9 1592.3,303.6 1529.8,102.6 1401.7,22.7 1065.5,12.4 213.9,25.9 98.7,103.6 1.5,97.8 1.0,152.6 1.0,261.8 83.1,239.4 63.8,1541.5 133.1,1785.4 326.2,1794.4 439.9,1881.3 861.9,1892.4 1550.0,1762.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[405.0,553.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.496585,40.859938]}},{"type":"Feature","properties":{"resourceCoords":[1521.0,553.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.496559,40.857834]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Humeston, Iowa | 1893 | sanborn02690_001 p2 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.38"},{"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":"3328.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T18:39:38Z","modified":"2026-10-18T18:39:38Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"423.5,9.5 419.8,43.9 125.6,107.5 64.0,1310.8 111.2,1803.0 331.2,1826.9 515.4,1755.1 539.1,1549.8 424.2,1434.1 424.2,1434.1 424.0,1433.9 424.0,1433.9 379.1,1379.5 366.2,1159.2 424.0,1060.1 424.0,1059.3 424.5,1059.3 425.9,1057.0 771.0,989.5 738.4,970.0 599.9,393.6 690.0,393.3 482.7,9.3 459.4,9.4 423.5,9.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[771.0,393.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.495207,40.861869]}},{"type":"Feature","properties":{"resourceCoords":[771.0,970.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.496609,40.86186]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0002__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Humeston, Iowa | 1893 | sanborn02690_001 p2 [4]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.74"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4822.0"},{"label":"split_canvas_y","value":"1930.0"},{"label":"split_canvas_w","value":"1630.0"},{"label":"split_canvas_h","value":"2770.0"}],"created":"2026-10-18T18:39:38Z","modified":"2026-10-18T18:39:38Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0002__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1397.2,1150.0 1414.8,1094.3 1446.1,1091.9 1439.8,1015.5 1585.2,556.4 1531.0,505.7 1241.3,529.6 1222.1,797.5 1321.4,908.0 1289.2,1096.0 1205.5,1111.8 1205.5,1123.4 1205.5,1151.1 1397.2,1150.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0002__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1205.5,482.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.49216468055275,40.86169781904321]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,482.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.49214705252476,40.86093783778052]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1175.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.49385071455238,40.860915151185644]}},{"type":"Feature","properties":{"resourceCoords":[1205.5,1175.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.49386834258037,40.86167513244833]}},{"type":"Feature","properties":{"resourceCoords":[1562.0,1149.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.493789,40.861011]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0002__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Humeston, Iowa | 1893 | sanborn02690_001 p2 [5]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.05"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1696.0"},{"label":"split_canvas_y","value":"2976.0"},{"label":"split_canvas_w","value":"3126.0"},{"label":"split_canvas_h","value":"4676.0"}],"created":"2026-10-18T18:39:38Z","modified":"2026-10-18T18:39:38Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0002__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"589.0,1689.5 597.0,1688.7 605.1,1836.6 710.0,1862.7 756.1,1824.8 795.8,1583.1 795.8,1577.2 796.0,1577.2 796.7,1577.2 915.6,1556.0 915.6,1555.8 917.6,1175.3 920.8,1175.0 921.1,1175.0 922.2,1175.0 1184.3,1155.9 1128.8,832.8 1068.8,780.3 936.8,794.1 928.6,785.0 832.0,1021.1 832.0,1062.4 831.8,1062.4 815.1,1062.3 803.4,1091.0 702.4,1083.2 704.1,1062.4 523.8,1081.4 467.8,1102.8 456.1,1161.0 486.8,1163.7 575.8,1374.2 529.0,1370.0 556.4,1561.6 561.0,1566.0 561.0,1577.2 561.0,1593.7 573.0,1677.8 589.0,1689.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154hm:g026901893:02690_1893-0002__5/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[424.0,744.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.4923758321495,40.86277382277312]}},{"type":"Feature","properties":{"resourceCoords":[1205.5,744.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.49201238198978,40.86002908134038]}},{"type":"Feature","properties":{"resourceCoords":[1205.5,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.4973996441437,40.85961527826994]}},{"type":"Feature","properties":{"resourceCoords":[424.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-93.49776309430342,40.86236001970269]}}]}}]}