{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02555_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Afton, Iowa | 1913 | 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":"8"},{"label":"placed","value":"6"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 6"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 41.02954,-94.19873 +/-412m); p1__2 (tier 4, 41.02954,-94.19873 +/-412m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Afton, Iowa | 1913 | sanborn02555_005 p1 [3]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.92"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2111.6"},{"label":"split_canvas_y","value":"2467.2"},{"label":"split_canvas_w","value":"4340.4"},{"label":"split_canvas_h","value":"5184.8"}],"created":"2026-10-18T16:43:35Z","modified":"2026-10-18T16:43:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1547.9,1726.8 1513.6,1726.7 1510.2,1399.3 1463.8,1399.0 1489.3,921.7 1499.1,921.8 1467.2,617.9 1449.0,618.0 1419.8,618.3 1416.5,630.3 759.0,650.4 707.8,903.2 704.0,903.4 704.0,906.8 622.0,908.0 585.0,910.1 561.6,1589.3 618.5,1870.0 678.3,1870.0 1558.0,1851.9 1547.9,1726.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[571.9,1394.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.2034085,41.027531]}},{"type":"Feature","properties":{"resourceCoords":[571.9,920.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.2034114,41.0284153]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0001__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Afton, Iowa | 1913 | sanborn02555_005 p1 [4]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.75"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3789.2"},{"label":"split_canvas_w","value":"2111.6"},{"label":"split_canvas_h","value":"2362.8"}],"created":"2026-10-18T16:43:35Z","modified":"2026-10-18T16:43:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0001__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"14.5,1114.5 28.4,1524.3 514.7,1524.0 514.0,1107.5 504.5,1106.8 504.7,1053.7 504.7,1049.2 33.1,1021.9 32.8,1027.5 28.1,1113.7 14.5,1114.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0001__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,947.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19769519015503,41.027232119726946]}},{"type":"Feature","properties":{"resourceCoords":[527.9,947.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19635587081791,41.02724606512224]}},{"type":"Feature","properties":{"resourceCoords":[527.9,1538.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.1963351781761,41.02611521214759]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1538.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19767449751322,41.02610126675229]}},{"type":"Feature","properties":{"resourceCoords":[503.9,1254.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.196406,41.026658]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0001__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Afton, Iowa | 1913 | sanborn02555_005 p1 [5]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"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":"6135.2"},{"label":"split_canvas_w","value":"2111.6"},{"label":"split_canvas_h","value":"1516.8"}],"created":"2026-10-18T16:43:35Z","modified":"2026-10-18T16:43:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0001__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"16.6,1911.5 509.9,1909.0 455.6,1690.4 505.5,1627.5 350.5,1619.1 329.9,1562.6 75.7,1616.6 48.0,1553.0 16.6,1911.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0001__5/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1533.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.20076533689337,41.03344875433565]}},{"type":"Feature","properties":{"resourceCoords":[527.9,1533.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19942594571138,41.033457971867115]}},{"type":"Feature","properties":{"resourceCoords":[527.9,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19941715152115,41.03273081927493]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.20075654270313,41.03272160174347]}},{"type":"Feature","properties":{"resourceCoords":[309.9,1855.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1999715,41.032838]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Afton, Iowa | 1913 | sanborn02555_005 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T16:43:35Z","modified":"2026-10-18T16:43:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"132.6,609.5 90.4,118.5 174.6,48.4 1528.0,32.3 1532.0,443.7 1529.2,673.0 1534.5,1123.3 1529.5,1749.9 1526.4,1826.1 1522.8,1912.0 1509.3,1912.0 1507.7,1878.8 196.0,1865.1 199.9,1912.0 195.6,1912.0 166.7,1912.0 162.5,1594.2 117.4,1594.0 140.9,1130.6 150.4,1130.7 118.7,835.9 72.6,836.3 132.6,609.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1068.0,670.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.198777,41.029303]}},{"type":"Feature","properties":{"resourceCoords":[618.0,670.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1999242,41.0293032]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Afton, Iowa | 1913 | sanborn02555_005 p3 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"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":"2026-10-18T16:43:35Z","modified":"2026-10-18T16:43:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"97.0,20.8 86.2,434.1 74.9,664.3 63.9,1116.8 36.0,1745.8 30.5,1816.7 501.5,1854.4 501.4,1859.0 500.0,1912.0 509.6,1912.0 510.4,1871.4 1540.2,1873.2 1599.0,436.4 1544.5,187.6 1326.3,227.4 1326.1,234.9 1325.8,248.2 1325.4,248.2 1189.5,252.3 1222.2,324.1 989.7,315.7 932.6,137.3 555.5,32.0 97.0,20.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[527.0,678.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.196454,41.029302]}},{"type":"Feature","properties":{"resourceCoords":[972.0,1618.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.19524,41.027535]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Afton, Iowa | 1913 | sanborn02555_005 p3 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.94"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4088.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1237.6"},{"label":"split_canvas_h","value":"992.8"}],"created":"2026-10-18T16:43:35Z","modified":"2026-10-18T16:43:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1041.2,231.2 1309.6,220.7 1206.5,14.7 1043.8,40.7 1041.2,231.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025551913:02555_1913-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1022.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19832138885565,41.032383810021344]}},{"type":"Feature","properties":{"resourceCoords":[1331.4,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19753758173361,41.03239192086478]}},{"type":"Feature","properties":{"resourceCoords":[1331.4,248.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19752895213149,41.031917383019504]}},{"type":"Feature","properties":{"resourceCoords":[1022.0,248.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19831275925353,41.031909272176065]}},{"type":"Feature","properties":{"resourceCoords":[1300.3,216.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1976087,41.0319778]}}]}}]}