{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02552_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Ackley, Iowa | 1911 | 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":"9"},{"label":"placed","value":"7"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 4, georef-snap 3"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"2 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p2__2 (tier 1, 42.55557,-93.05912 +/-100m); p2__3 (tier 1, 42.55624,-93.05794 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0001__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 | 1911 | sanborn02552_005 p1 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.97"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3946.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3706.0"}],"created":"2026-10-18T17:06:24Z","modified":"2026-10-18T17:06:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"26.4,1037.3 60.3,1054.3 45.9,1732.7 96.5,1905.8 1555.1,1884.1 1584.0,1299.6 1569.5,1068.7 1468.4,1039.2 1327.9,1039.8 692.4,1036.4 692.4,1047.5 65.9,1050.0 65.8,1036.5 26.4,1037.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1328.0,1875.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.046628,42.5491551]}},{"type":"Feature","properties":{"resourceCoords":[66.0,1331.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0498284,42.5501716]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0002__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 | 1911 | sanborn02552_005 p2 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"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":"2026-10-18T17:06:24Z","modified":"2026-10-18T17:06:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1464.0,1801.0 1480.0,634.2 1478.9,634.2 1478.2,634.2 1446.8,634.4 1441.4,709.0 1167.5,661.5 1141.2,494.9 794.5,489.6 793.6,486.0 791.0,486.0 791.0,475.2 733.3,235.8 626.8,118.5 518.4,116.8 404.1,28.4 78.9,37.9 51.2,1843.8 405.6,1820.3 534.7,1880.1 833.4,1884.7 834.5,1791.8 1464.0,1801.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1452.0,1019.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.05635956362822,42.554684027777]}},{"type":"Feature","properties":{"resourceCoords":[1452.0,456.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0563814371396,42.55573515123194]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ackley, Iowa | 1911 | sanborn02552_005 p3","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T17:06:24Z","modified":"2026-10-18T17:06:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"117.5,1817.1 1385.0,1819.0 1386.0,1325.5 1465.1,1323.8 1361.2,438.8 1409.8,420.2 1391.0,371.7 1396.0,1.0 1324.2,1.0 1324.1,71.3 1273.5,100.0 1114.7,56.4 984.6,106.7 118.0,90.4 85.0,651.1 118.2,650.6 117.5,1817.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[117.0,1318.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0563029,42.5541565]}},{"type":"Feature","properties":{"resourceCoords":[1385.0,1819.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.053085,42.5532257]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ackley, Iowa | 1911 | sanborn02552_005 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T17:06:24Z","modified":"2026-10-18T17:06:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1518.8,85.3 1367.1,19.2 179.2,19.5 55.9,62.2 30.8,627.0 94.1,953.3 34.9,1177.5 39.0,1699.0 81.7,1836.9 191.3,1837.5 191.6,1765.5 564.3,1772.0 613.0,1753.3 631.5,1802.2 1519.5,1701.2 1519.1,1681.0 1514.8,1142.9 1525.2,493.4 1534.5,1.0 1520.8,1.0 1518.8,85.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1523.0,488.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.04981707345982,42.55415759152472]}},{"type":"Feature","properties":{"resourceCoords":[1523.0,1792.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.05311400872921,42.55414333692829]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ackley, Iowa | 1911 | sanborn02552_005 p5","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T17:06:24Z","modified":"2026-10-18T17:06:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1530.4,62.6 1594.5,512.5 1558.3,1869.3 137.3,1861.7 137.3,1909.2 45.5,1909.5 45.3,1287.2 45.0,33.9 1366.5,34.1 1367.5,15.2 1530.4,62.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[580.0,660.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.05469,42.5522146]}},{"type":"Feature","properties":{"resourceCoords":[580.0,34.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0530847,42.552215]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ackley, Iowa | 1911 | sanborn02552_005 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T17:06:24Z","modified":"2026-10-18T17:06:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"126.2,565.3 124.8,68.0 224.9,65.4 765.5,56.4 1418.2,61.3 1423.2,1662.9 1424.0,1912.0 1382.1,1912.0 1272.7,1857.7 166.5,1853.4 149.7,1912.0 130.2,1912.0 126.2,565.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[776.0,1114.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.05145370302489,42.552205258449675]}},{"type":"Feature","properties":{"resourceCoords":[1422.0,1114.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.04982816742621,42.55220200896991]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ackley, Iowa | 1911 | sanborn02552_005 p7","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T17:06:24Z","modified":"2026-10-18T17:06:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"159.8,19.8 653.8,27.0 653.7,13.3 1373.1,27.5 1575.9,143.8 1589.9,455.6 1524.4,622.2 1589.1,970.4 1565.9,1868.8 1424.8,1869.1 786.6,1864.7 786.6,1875.8 157.6,1877.3 157.9,1615.5 159.8,19.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154am:g025521911:02552_1911-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1426.0,1063.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0466284,42.5522163]}},{"type":"Feature","properties":{"resourceCoords":[790.0,29.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.048239,42.5541382]}}]}}]}