{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02695_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Iowa City, Iowa | 1899 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"28"},{"label":"placed","value":"20"},{"label":"unplaced","value":"8"},{"label":"fit sources","value":"georef-snap 12, georef 8"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 17 panels"},{"label":"unplaced pages","value":"p15__2 (tier 1, 41.65449,-91.53025 +/-136m); p18__2 (tier 1, 41.65078,-91.53029 +/-100m); p18__4 (tier 1, 41.64977,-91.53147 +/-113m); p2__1 (tier 1, 41.66676,-91.52562 +/-100m); p2__2 (tier 1, 41.66003,-91.53753 +/-100m); p2__3 (tier 1, 41.66594,-91.52448 +/-100m); p4__2 (tier 1, 41.67820,-91.53262 +/-100m); p5__2 (tier 1, 41.66239,-91.53736 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1385.3,1873.3 967.6,1870.4 757.0,1872.0 651.9,1860.0 293.2,1859.5 122.2,1857.5 122.2,1336.7 115.8,967.7 118.2,651.8 69.3,651.6 74.5,24.3 79.2,24.3 250.2,24.1 659.2,26.9 1325.5,32.9 1547.4,32.8 1550.1,622.9 1478.8,621.4 1479.2,685.5 1566.2,685.7 1523.7,1257.1 1482.3,1259.1 1482.6,1299.2 1533.4,1299.8 1573.5,1873.8 1385.3,1873.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[697.0,43.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53017356944471,41.66241526362438]}},{"type":"Feature","properties":{"resourceCoords":[124.0,1269.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53165672614479,41.66009618614906]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"260.9,1827.7 258.3,1589.1 252.2,649.8 254.4,26.5 849.0,28.0 897.6,18.8 1070.8,18.0 1375.9,16.8 1372.9,648.4 1422.2,648.3 1420.7,966.4 1428.5,1337.8 1430.2,1862.2 1430.2,1863.5 261.2,1860.6 260.9,1827.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[849.0,635.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53310477450201,41.66130660445778]}},{"type":"Feature","properties":{"resourceCoords":[1437.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53165701127999,41.658988172194285]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1537.6,1881.4 937.1,1856.5 937.0,1871.1 342.6,1858.8 342.6,1852.2 46.1,1867.1 31.1,46.9 70.4,20.9 365.8,25.6 365.8,19.0 1558.9,36.5 1547.3,646.2 1539.0,1565.1 1538.0,1798.5 1537.6,1881.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1549.0,37.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53461324556955,41.662466881684374]}},{"type":"Feature","properties":{"resourceCoords":[355.0,1261.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53768406141641,41.660098444585905]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p13","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"341.8,45.3 341.9,52.1 956.2,56.2 956.2,41.2 1576.9,58.2 1576.9,61.8 1579.8,1873.1 898.4,1872.2 634.7,1873.0 621.0,1884.6 24.9,1841.8 62.1,1255.9 35.7,64.9 341.8,45.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[957.0,616.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5361889,41.6578812]}},{"type":"Feature","properties":{"resourceCoords":[957.0,1872.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5362216,41.6555371]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1059.0,1827.8 923.5,1880.8 646.3,1885.5 60.8,1884.6 58.9,95.9 58.4,40.6 1225.2,46.0 1225.2,44.6 1397.2,46.4 1464.0,46.4 1536.0,639.8 1494.9,640.0 1531.5,1306.0 1597.8,1305.9 1603.8,1731.2 1603.0,1837.4 1593.1,1876.8 1562.1,1889.8 1450.8,1889.1 1059.0,1827.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1228.0,54.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53166741421157,41.6589607949333]}},{"type":"Feature","properties":{"resourceCoords":[643.0,1864.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53319250943241,41.65555095533582]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0015__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p15 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"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":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0015__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"303.8,1880.4 582.9,1830.4 593.8,1812.5 593.8,1583.6 593.8,1201.7 1364.6,1206.8 1378.2,1192.3 1378.4,1138.0 1548.0,1006.1 1548.2,809.0 1572.1,809.1 1547.0,282.4 1606.0,51.0 1494.0,50.9 1080.6,50.1 669.6,47.6 462.4,49.4 358.9,37.6 71.4,37.5 141.6,618.5 101.3,618.6 136.8,1270.8 201.7,1270.7 207.3,1687.2 206.4,1791.2 196.8,1829.7 166.4,1842.4 303.8,1880.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0015__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[400.0,619.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53023540747294,41.65784233871103]}},{"type":"Feature","properties":{"resourceCoords":[979.0,38.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.52872561031509,41.65895340652467]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0016__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p16 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.95"},{"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":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0016__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"781.0,402.3 519.9,682.5 516.0,686.6 1.0,684.6 1.0,1065.2 89.7,1048.8 41.9,1832.8 780.5,1857.8 780.1,1818.8 1559.7,1811.0 1559.5,1879.0 1593.4,1796.8 1514.6,1387.9 1578.4,171.9 1466.8,41.7 983.3,19.1 982.4,1.0 957.2,1.0 958.0,206.5 781.0,345.4 781.0,402.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0016__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[959.0,471.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5272853,41.656587]}},{"type":"Feature","properties":{"resourceCoords":[367.0,1823.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5287913,41.6541105]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0016__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p16 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"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":"3124.0"},{"label":"split_canvas_h","value":"2746.4"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0016__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"751.1,81.2 1.0,79.4 1.0,117.0 29.3,118.3 99.9,195.7 100.2,364.9 43.7,372.0 22.8,498.9 51.1,625.7 192.3,681.9 523.8,674.4 735.0,448.5 720.6,216.0 750.2,146.7 751.1,81.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0016__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[736.0,94.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5258880786893,41.65407797795504]}},{"type":"Feature","properties":{"resourceCoords":[169.0,94.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.52733968953872,41.654079494698365]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p17","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1524.9,1519.6 1612.0,1705.9 1612.0,1747.4 1609.8,1833.0 1552.5,1884.0 72.0,1838.9 59.0,1843.9 58.7,1580.5 61.0,899.8 62.8,307.4 60.4,307.6 58.3,27.0 121.7,40.5 1211.8,24.1 1508.3,86.5 1558.5,42.8 1559.8,201.6 1610.7,237.2 1612.0,391.2 1612.0,1051.0 1514.6,1519.6 1524.9,1519.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[653.0,1521.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5362319,41.6544267]}},{"type":"Feature","properties":{"resourceCoords":[653.0,900.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.534679,41.6544168]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0018__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p18 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"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":"0.0"},{"label":"split_canvas_w","value":"2332.0"},{"label":"split_canvas_h","value":"3230.0"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0018__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"549.8,752.2 544.1,110.3 494.9,18.6 205.7,17.9 156.2,88.4 22.2,52.8 20.8,737.0 549.8,752.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0018__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.5312215047117,41.65077531374277]}},{"type":"Feature","properties":{"resourceCoords":[583.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.52972921854551,41.6507776583131]}},{"type":"Feature","properties":{"resourceCoords":[583.0,807.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.52972486695404,41.6492332829196]}},{"type":"Feature","properties":{"resourceCoords":[0.0,807.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.53121715312022,41.64923093834927]}},{"type":"Feature","properties":{"resourceCoords":[180.0,698.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.530757,41.64944]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0018__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p18 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3230.0"},{"label":"split_canvas_w","value":"3742.0"},{"label":"split_canvas_h","value":"4422.0"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0018__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"163.7,889.1 1.0,965.9 1.0,966.9 25.2,979.4 42.2,1787.6 207.9,1885.8 823.1,1878.3 907.9,1791.5 824.9,1434.8 878.8,1162.3 742.1,1099.5 729.2,1078.2 605.6,969.1 163.7,878.9 163.7,889.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0018__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[771.6,1777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53473989594247,41.651109273142566]}},{"type":"Feature","properties":{"resourceCoords":[166.9,1777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53626603445244,41.65112305852683]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0002__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p2 [4]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3976.8"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3675.2"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0002__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1578.6,1818.8 1558.0,1821.7 1547.8,1078.1 688.1,1026.7 638.9,1063.6 636.6,1271.0 523.2,1316.6 456.1,1504.2 424.0,1511.9 424.0,1519.2 424.0,1519.3 393.1,1519.3 192.8,1567.5 179.7,1519.3 179.6,1519.3 134.2,1852.8 416.4,1850.8 993.4,1837.3 1578.8,1830.5 1578.6,1818.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0002__4/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1545.0,1237.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.524283148532,41.66684555168252]}},{"type":"Feature","properties":{"resourceCoords":[397.0,1828.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.52721565042579,41.66578180246778]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0002__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p2 [5]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.80"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3976.8"},{"label":"split_canvas_w","value":"1696.0"},{"label":"split_canvas_h","value":"2100.4"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0002__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"50.6,1506.4 410.3,1501.1 403.1,1014.1 22.2,1019.7 74.7,1223.7 19.8,1330.4 50.6,1506.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0002__5/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,994.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.5258575874962,41.6686516799393]}},{"type":"Feature","properties":{"resourceCoords":[424.0,994.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.52477240365457,41.668639750426756]}},{"type":"Feature","properties":{"resourceCoords":[424.0,1519.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.52479218510766,41.66763639519463]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1519.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-91.5258773689493,41.66764832470717]}},{"type":"Feature","properties":{"resourceCoords":[71.0,1369.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.52569,41.667933]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"98.9,1825.5 55.7,1825.3 53.8,1237.1 50.4,648.1 52.0,61.5 45.0,61.5 125.7,11.8 1526.0,45.8 1594.6,355.3 1594.2,1465.5 1586.4,1455.8 1531.6,1826.0 1271.4,1824.7 585.5,1825.6 98.9,1825.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1211.0,1240.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5286653592457,41.66684905882618]}},{"type":"Feature","properties":{"resourceCoords":[79.0,1240.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53149794642498,41.666873986390215]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p4 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"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":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1557.6,1834.0 1557.2,1244.5 1555.5,654.4 1558.6,66.5 1551.7,66.5 1524.8,83.0 786.8,31.8 607.4,178.1 498.9,179.1 500.7,374.3 421.6,425.6 417.0,494.2 417.0,513.3 415.7,513.3 415.3,519.7 300.2,593.0 155.7,594.4 149.9,760.7 49.6,862.9 29.3,1014.9 36.1,1759.7 1.0,1758.8 1.0,1797.9 367.1,1865.7 367.1,1833.4 1557.6,1834.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[969.0,653.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5330166,41.6679935]}},{"type":"Feature","properties":{"resourceCoords":[969.0,1244.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53303,41.666891]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p5 [1]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.85"},{"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":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"80.3,1872.5 374.9,1871.0 374.9,1864.5 1565.0,1857.0 1560.9,1271.8 1553.3,416.9 1551.1,163.7 1196.3,101.0 1196.0,63.5 428.1,50.1 359.4,114.2 328.3,331.0 93.1,446.8 20.3,1076.2 26.1,1808.8 80.3,1872.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[390.0,703.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5375759,41.6647381]}},{"type":"Feature","properties":{"resourceCoords":[1565.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5345877,41.6624679]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p6","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1329.3,1808.5 1160.2,1809.0 855.9,1809.7 685.8,1810.1 638.0,1819.0 54.0,1816.5 54.2,1227.4 52.9,366.8 52.5,80.5 1209.0,80.0 1251.0,80.2 1460.2,80.6 1525.2,656.3 1496.3,1232.6 1526.0,1232.6 1489.7,1809.3 1329.3,1808.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1209.0,1233.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5316034,41.663566]}},{"type":"Feature","properties":{"resourceCoords":[1209.0,80.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.5315734,41.6657803]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"345.9,1836.7 97.8,1837.0 130.8,1250.5 100.6,1250.8 126.1,664.8 56.2,80.2 325.0,78.8 1003.6,74.7 1542.7,74.5 1553.1,1832.6 1500.0,1833.0 1015.5,1837.2 345.9,1836.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[389.0,1819.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.53015951783209,41.662478459300445]}},{"type":"Feature","properties":{"resourceCoords":[1525.0,68.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.52721243325762,41.6657507832742]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"55.7,63.7 637.8,58.6 1228.3,60.4 1228.3,48.6 1452.6,20.2 1612.0,112.6 1562.0,156.3 1606.6,307.5 1612.0,1703.4 1612.0,1786.8 1562.3,1837.5 1290.1,1853.1 1289.0,1841.6 681.0,1841.8 52.0,1840.5 55.7,63.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[73.0,1234.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.52715023798507,41.66354965000499]}},{"type":"Feature","properties":{"resourceCoords":[1223.0,77.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.52424675001674,41.66569403391494]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Iowa City, Iowa | 1899 | sanborn02695_004 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T22:32:39Z","modified":"2026-10-19T22:32:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"321.6,1878.0 436.0,1878.8 437.8,1871.9 1545.2,1890.0 1595.2,1847.0 1561.6,175.3 1589.8,46.6 1612.0,45.4 1612.0,34.0 1009.9,30.7 387.1,25.9 333.9,25.6 72.3,24.2 71.7,617.8 1.0,615.9 1.0,680.4 87.5,681.0 41.6,1255.5 1.0,1257.2 1.0,1297.7 51.1,1298.5 88.3,1876.1 321.6,1878.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154im:g026951899:02695_1899-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[961.0,43.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.52576558586298,41.662380355409375]}},{"type":"Feature","properties":{"resourceCoords":[371.0,1271.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.52726597080093,41.66006506449054]}}]}}]}