{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02446_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"North Liberty, Indiana | 1929 | 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":"4"},{"label":"unplaced","value":"5"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 41.53523,-86.42716 +/-336m); p1__2 (tier 4, 41.53523,-86.42716 +/-336m); p1__3 (tier 1, 41.53413,-86.42671 +/-100m); p1__5 (tier 1, 41.67835,-86.24345 +/-136m); p1__6 (tier 4, 41.53523,-86.42716 +/-336m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0001__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"North Liberty, Indiana | 1929 | sanborn02446_003 p1 [4]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.89"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3670.4"},{"label":"split_canvas_w","value":"3142.0"},{"label":"split_canvas_h","value":"2214.0"}],"created":"2026-10-18T13:24:57Z","modified":"2026-10-18T13:24:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0001__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"408.6,1467.5 784.5,1353.6 784.5,1341.0 784.5,1316.7 784.4,1297.3 757.4,1295.7 751.2,953.1 37.5,943.7 29.1,1300.8 1.0,1299.9 1.0,1354.9 371.8,1458.2 408.6,1467.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0001__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,917.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.42786874358768,41.53875005304337]}},{"type":"Feature","properties":{"resourceCoords":[785.5,917.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.42592524886075,41.538754513237485]}},{"type":"Feature","properties":{"resourceCoords":[785.5,1471.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.4259210347494,41.537730014718655]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1471.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.42786452947632,41.53772555452454]}},{"type":"Feature","properties":{"resourceCoords":[372.2,963.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.4269474,41.5386671]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"North Liberty, Indiana | 1929 | sanborn02446_003 p2","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:24:57Z","modified":"2026-10-18T13:24:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"407.6,43.6 181.7,36.2 94.1,94.0 129.9,225.3 18.8,647.2 42.9,1798.1 1.0,1798.6 1.0,1799.1 149.1,1874.3 473.8,1878.2 663.7,1877.7 1111.5,1874.6 1451.2,1876.1 1612.0,1799.0 1612.0,1753.9 1609.0,1754.0 1579.5,166.1 1419.8,56.1 1192.0,42.1 1191.9,98.3 779.1,222.7 779.1,202.3 407.4,98.3 407.6,43.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1408.0,437.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.425386,41.537322]}},{"type":"Feature","properties":{"resourceCoords":[163.0,1164.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.4284588,41.5359654]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"North Liberty, Indiana | 1929 | sanborn02446_003 p3","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:24:57Z","modified":"2026-10-18T13:24:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1433.8,148.7 1612.0,150.2 1612.0,300.3 1536.0,392.1 1515.7,1113.8 1512.8,1113.8 1477.2,1557.7 1470.3,1557.7 1485.0,1872.0 1184.8,1844.6 64.3,1877.5 17.3,1174.0 64.4,91.4 93.3,113.9 130.1,99.8 145.3,63.5 517.7,120.8 760.9,22.4 938.2,52.2 1107.5,140.8 1433.8,148.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[98.0,735.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.430947,41.533524]}},{"type":"Feature","properties":{"resourceCoords":[1122.0,1552.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.428393,41.5320493]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"North Liberty, Indiana | 1929 | sanborn02446_003 p4","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:24:57Z","modified":"2026-10-18T13:24:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"193.9,184.2 636.9,176.3 972.8,174.2 1131.0,96.2 1130.5,51.6 1458.8,42.3 1546.1,164.2 1573.0,963.6 1514.1,1864.5 922.6,1753.1 282.4,1894.2 95.5,1881.5 73.9,1572.5 80.6,1572.5 105.7,1134.8 108.5,1134.8 112.2,424.1 184.8,332.1 182.4,184.4 193.9,184.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd409m:g4094m:g4094nm:g4094nm_g024461929:02446_1929-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[321.0,1569.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.426917,41.532053]}},{"type":"Feature","properties":{"resourceCoords":[-449.0,1121.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.4288358,41.5329014]}}]}}]}