{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02853_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Valley Junction, Iowa | 1920 | mapsnap generated fit (2026-10-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-20"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"11"},{"label":"placed","value":"8"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 7, georef-snap 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"2 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p9__1 (tier 1, 41.56990,-93.71154 +/-153m); p9__2 (tier 1, 41.56945,-93.71312 +/-223m); p9__3 (tier 1, 41.56977,-93.70996 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valley Junction, Iowa | 1920 | sanborn02853_001 p1 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.96"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3400.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4252.0"}],"created":"2026-10-20T03:26:00Z","modified":"2026-10-20T03:26:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1539.1,1858.7 1548.8,884.4 1461.5,884.3 1461.6,870.5 55.4,894.5 54.3,1852.9 1324.8,1857.5 1539.1,1858.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[719.0,884.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.7130386,41.577311]}},{"type":"Feature","properties":{"resourceCoords":[1274.0,884.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.711653,41.5773086]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valley Junction, Iowa | 1920 | sanborn02853_001 p2","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:26:00Z","modified":"2026-10-20T03:26:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1510.4,1864.1 1509.8,1798.2 1581.7,1667.5 1534.5,1667.2 1555.2,465.1 1500.7,67.3 1102.2,18.7 822.3,65.0 99.5,40.8 61.2,852.1 1.0,853.5 1.0,867.6 89.2,867.4 84.2,1861.9 109.3,1861.9 1510.4,1864.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[938.0,868.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.708891,41.577294]}},{"type":"Feature","properties":{"resourceCoords":[380.0,1862.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.7102735,41.575483]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valley Junction, Iowa | 1920 | sanborn02853_001 p3","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:26:00Z","modified":"2026-10-20T03:26:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1322.0,1762.6 155.9,1759.1 146.8,1746.7 151.6,1721.9 23.5,1245.9 19.7,150.3 1310.4,148.9 1537.0,149.1 1545.0,993.0 1554.4,993.0 1555.2,993.0 1547.5,1763.3 1322.0,1762.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1263.0,992.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.711663,41.5739409]}},{"type":"Feature","properties":{"resourceCoords":[150.0,992.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.7143982,41.5739553]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valley Junction, Iowa | 1920 | sanborn02853_001 p4","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:26:00Z","modified":"2026-10-20T03:26:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"104.0,1765.8 92.1,1765.8 96.2,993.5 95.4,993.4 86.0,993.4 74.0,147.3 90.2,147.3 1488.2,143.4 1508.4,1763.5 104.0,1765.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[370.0,993.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.710274,41.5739302]}},{"type":"Feature","properties":{"resourceCoords":[1499.0,993.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.707507,41.573906]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valley Junction, Iowa | 1920 | sanborn02853_001 p5","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:26:00Z","modified":"2026-10-20T03:26:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1252.9,1845.3 1252.8,1829.2 122.4,1823.7 112.8,207.3 112.3,141.7 184.1,11.7 1289.6,20.0 1502.7,55.6 1554.4,121.4 1534.2,1848.7 1252.9,1845.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[118.0,1055.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.707507,41.573906]}},{"type":"Feature","properties":{"resourceCoords":[1244.0,209.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.70473,41.57545]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valley Junction, Iowa | 1920 | sanborn02853_001 p6","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:26:00Z","modified":"2026-10-20T03:26:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1612.0,1881.6 1573.5,1894.7 1558.4,1814.2 833.1,1862.2 766.8,1796.6 334.6,1843.0 85.0,1778.4 26.1,1720.1 28.4,825.9 159.0,153.7 168.0,166.0 1332.9,171.2 1554.5,172.2 1549.4,941.4 1577.5,941.5 1577.9,1770.2 1536.8,1768.7 1612.0,1881.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1284.0,940.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.711662,41.571109]}},{"type":"Feature","properties":{"resourceCoords":[168.0,166.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.714397,41.572545]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valley Junction, Iowa | 1920 | sanborn02853_001 p7","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:26:00Z","modified":"2026-10-20T03:26:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"115.2,1657.3 117.1,837.2 89.3,837.0 96.5,75.8 111.7,76.0 1496.3,86.1 1500.2,1357.0 1496.4,1690.2 1467.4,1690.1 1586.0,1808.8 879.4,1800.2 582.2,1859.0 465.9,1786.8 157.8,1781.3 74.5,1655.7 115.2,1657.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1499.0,1545.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.7075093,41.5697797]}},{"type":"Feature","properties":{"resourceCoords":[940.0,82.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.708889,41.5725036]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Valley Junction, Iowa | 1920 | sanborn02853_001 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:26:00Z","modified":"2026-10-20T03:26:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1228.2,84.3 1228.3,100.3 1508.5,102.8 1508.5,115.2 1573.1,1737.8 1281.3,1820.7 1075.8,1734.7 776.0,1729.8 469.7,1820.1 202.2,1818.4 81.9,1699.4 111.1,1699.3 113.1,1363.5 102.1,82.3 1228.2,84.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154vm:g028531920:02853_1920-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1234.0,861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.70473054540962,41.57103917247313]}},{"type":"Feature","properties":{"resourceCoords":[106.0,1709.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.70752962748811,41.56949188539343]}}]}}]}