{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02867_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"West Liberty, 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":"7"},{"label":"placed","value":"4"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"3 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 41.57090,-91.26327 +/-332m); p2__1 (tier 2, 41.57062,-91.26323 +/-172m); p3__2 (tier 1, 41.58886,-91.02053 +/-106m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"West Liberty, Iowa | 1899 | sanborn02867_003 p1 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"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":"0.0"},{"label":"split_canvas_w","value":"4305.6"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T17:26:45Z","modified":"2026-10-19T17:26:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"141.0,210.9 140.4,644.7 137.8,794.8 137.8,1383.8 134.9,1753.6 201.2,1784.4 200.6,1860.0 723.9,1854.0 755.0,1461.7 1045.1,1266.0 1033.7,895.5 987.0,855.1 985.0,853.7 985.0,820.4 946.6,761.1 945.8,62.7 347.8,35.2 141.2,171.8 141.0,210.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[603.2,1388.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.260775,41.569936]}},{"type":"Feature","properties":{"resourceCoords":[603.2,212.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.260741,41.572162]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"West Liberty, Iowa | 1899 | sanborn02867_003 p1 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.23"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3032.0"},{"label":"split_canvas_y","value":"3648.0"},{"label":"split_canvas_w","value":"3420.0"},{"label":"split_canvas_h","value":"4004.0"}],"created":"2026-10-19T17:26:45Z","modified":"2026-10-19T17:26:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1612.0,1111.2 1233.7,912.0 1105.6,960.8 1081.2,1252.6 931.5,1365.4 872.4,1519.2 794.8,1500.3 802.3,1615.2 835.2,1581.2 863.0,1602.4 883.6,1813.1 1098.3,1811.5 1130.5,1870.6 1412.3,1822.9 1567.4,1860.7 1608.7,1162.2 1612.0,1163.6 1612.0,1111.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1168.0,1284.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.26493,41.568651]}},{"type":"Feature","properties":{"resourceCoords":[1168.0,1855.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.264845,41.567574]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"West Liberty, Iowa | 1899 | sanborn02867_003 p2 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T17:26:45Z","modified":"2026-10-19T17:26:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"146.5,72.8 59.7,88.9 33.4,180.3 107.8,1179.2 46.0,1243.3 117.2,1311.9 75.8,1340.7 400.9,1523.5 401.6,1557.8 404.1,1559.8 433.4,1583.4 825.2,1752.4 829.2,1803.6 973.5,1848.7 1042.7,1805.5 1128.0,1880.8 1245.3,1794.7 1560.7,1823.9 1572.8,1725.7 1612.0,1725.0 1612.0,1686.1 1612.0,1650.8 1546.8,1621.0 1547.1,1258.1 1543.0,680.0 1544.5,532.7 1542.1,107.0 968.4,107.2 146.7,109.2 146.5,72.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[392.0,680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.264902,41.57111]}},{"type":"Feature","properties":{"resourceCoords":[1543.0,680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.261935,41.571069]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"West Liberty, Iowa | 1899 | sanborn02867_003 p3 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T17:26:45Z","modified":"2026-10-19T17:26:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"837.0,1847.0 1421.5,1850.2 1421.6,1811.1 1612.0,1684.8 1605.3,1673.3 1611.2,433.5 1549.6,70.8 1314.0,31.1 1208.1,110.8 1239.2,317.0 1189.6,639.4 1189.7,653.0 1187.5,653.0 1186.5,659.7 431.3,662.0 431.0,658.5 429.6,658.5 429.4,636.8 397.0,199.3 310.2,100.7 68.2,117.9 18.9,731.3 57.9,1564.5 39.5,1799.8 1.0,1806.7 1.0,1844.0 837.0,1847.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028671899:02867_1899-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[256.0,1268.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.264841,41.573304]}},{"type":"Feature","properties":{"resourceCoords":[837.0,1847.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.263389,41.572194]}}]}}]}