{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02552_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Ackley, Iowa | 1916 | 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":"10"},{"label":"placed","value":"9"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 6, georef-snap 3"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p3__2 (tier 1, 42.55466,-93.05781 +/-103m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_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":"Ackley, Iowa | 1916 | sanborn02552_006 p1 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.90"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3995.2"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3656.8"}],"created":"2026-10-18T22:03:56Z","modified":"2026-10-18T22:03:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"127.4,1023.0 76.0,1341.9 75.9,1385.5 113.3,1447.9 120.2,1741.3 69.8,1905.9 1552.8,1907.5 1574.9,1334.9 1525.0,1077.2 1320.3,1034.0 697.7,1023.2 697.7,1020.6 127.4,1023.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1328.0,1287.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0466281,42.5501741]}},{"type":"Feature","properties":{"resourceCoords":[76.0,1287.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0498284,42.5501716]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ackley, Iowa | 1916 | sanborn02552_006 p2 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.91"},{"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":"3842.4"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T22:03:56Z","modified":"2026-10-18T22:03:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"902.0,1035.6 936.2,513.6 876.9,180.5 318.9,139.2 152.7,226.9 37.8,488.2 40.5,1162.2 143.8,1632.9 404.9,1711.6 470.5,1820.0 774.9,1862.3 769.6,1912.0 846.1,1912.0 886.4,1315.4 872.4,1315.3 903.0,1037.3 902.0,1035.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[195.9,750.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0596454,42.5557078]}},{"type":"Feature","properties":{"resourceCoords":[601.8,750.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0586195,42.5557048]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ackley, Iowa | 1916 | sanborn02552_006 p2 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3842.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2609.6"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T22:03:56Z","modified":"2026-10-18T22:03:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"983.3,1866.0 1602.5,1871.8 1535.3,1858.1 1592.5,866.6 1509.3,161.3 1480.4,97.3 1138.2,56.9 1138.4,31.1 971.0,33.5 981.5,1594.2 983.3,1866.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[996.6,1053.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.04819149308096,42.55220909031786]}},{"type":"Feature","properties":{"resourceCoords":[996.6,36.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.04817343545199,42.554133210075335]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ackley, Iowa | 1916 | sanborn02552_006 p3 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"2026-10-18T22:03:56Z","modified":"2026-10-18T22:03:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"17.3,1812.3 575.6,1870.5 699.4,1871.9 1331.9,1879.0 1334.8,1605.2 1337.1,1385.3 1596.3,1390.5 1596.5,1268.6 1538.9,1078.5 1409.0,711.3 1361.2,729.1 1342.7,652.6 1351.5,2.7 1324.1,2.3 1293.7,76.0 797.1,41.3 739.0,76.6 717.2,703.0 679.0,777.2 679.0,827.0 679.0,827.0 679.0,827.0 653.4,827.0 636.1,860.5 122.2,827.0 97.2,827.0 62.4,1102.8 76.4,1103.1 17.3,1812.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1335.0,1380.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.05469748744554,42.55415954848297]}},{"type":"Feature","properties":{"resourceCoords":[708.0,1864.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.05627703297422,42.55323924811768]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ackley, Iowa | 1916 | sanborn02552_006 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:03:56Z","modified":"2026-10-18T22:03:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1411.0,1820.7 1410.8,1837.3 770.4,1812.2 132.4,1814.0 132.7,1797.7 135.6,1575.6 397.4,1581.7 397.9,1458.6 340.3,1266.4 210.2,895.3 161.9,913.1 143.4,835.8 154.3,179.6 126.7,179.1 140.9,144.9 272.8,81.4 635.4,152.2 861.0,148.3 935.1,54.8 1397.2,96.7 1415.5,198.6 1499.2,199.8 1391.7,1377.8 1417.0,1367.6 1414.1,1585.9 1411.0,1820.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1407.0,1592.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.05149053959303,42.554154139342025]}},{"type":"Feature","properties":{"resourceCoords":[132.0,1592.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.05470058351378,42.55411924430866]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ackley, Iowa | 1916 | sanborn02552_006 p5","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:03:56Z","modified":"2026-10-18T22:03:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1391.8,1743.8 758.0,1742.0 104.0,1742.0 101.5,1523.2 76.3,1534.0 154.6,350.6 70.8,351.4 49.8,249.8 67.2,250.9 94.7,82.9 291.1,29.9 1494.8,76.0 1554.0,162.9 1571.2,425.2 1563.2,1740.7 1391.8,1743.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[104.0,1742.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0514729,42.5541657]}},{"type":"Feature","properties":{"resourceCoords":[758.0,1742.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0498306,42.5541534]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ackley, Iowa | 1916 | sanborn02552_006 p6","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:03:56Z","modified":"2026-10-18T22:03:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"184.4,73.3 189.9,1.0 110.9,1.0 31.7,691.5 43.8,1413.6 108.9,1559.7 108.3,1727.5 49.7,1792.9 122.5,1836.9 1201.8,1862.6 1493.8,1805.3 1511.0,1730.7 1511.8,1501.9 1516.2,129.8 875.6,127.9 184.4,73.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[240.0,1231.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0578849,42.5511798]}},{"type":"Feature","properties":{"resourceCoords":[240.0,126.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0578947,42.5532236]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ackley, Iowa | 1916 | sanborn02552_006 p7","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:03:56Z","modified":"2026-10-18T22:03:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"188.0,352.9 187.7,92.7 826.0,81.7 1467.0,97.5 1467.4,352.6 1468.7,1454.6 1469.2,1865.0 1459.1,1872.3 818.7,1886.7 309.4,1828.3 207.5,1864.7 188.0,1912.0 188.0,1722.0 188.0,352.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[188.0,898.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.05469,42.5522146]}},{"type":"Feature","properties":{"resourceCoords":[1468.0,898.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0514689,42.5522153]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ackley, Iowa | 1916 | sanborn02552_006 p8","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:03:56Z","modified":"2026-10-18T22:03:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"167.4,523.8 167.1,252.7 166.8,18.2 817.9,25.1 1449.0,33.5 1448.1,1622.8 1448.0,1896.9 870.0,1899.7 870.7,1895.2 253.6,1807.8 244.8,1912.0 216.5,1912.0 169.0,1912.0 168.6,1623.3 167.4,523.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521916:02552_1916-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[818.0,1068.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0498295,42.5522157]}},{"type":"Feature","properties":{"resourceCoords":[168.0,1068.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0514689,42.5522153]}}]}}]}