{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02707_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"La Porte City, Iowa | 1913 | mapsnap generated fit (2026-10-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-22"},{"label":"run","value":"corpus-v2.1"},{"label":"pages","value":"9"},{"label":"placed","value":"5"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 4, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 42.31409,-92.18974 +/-472m); p1__2 (tier 4, 42.31409,-92.18974 +/-472m); p1__4 (tier 4, 42.31409,-92.18974 +/-472m); p4__2 (tier 1, 42.31186,-92.18647 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"La Porte City, Iowa | 1913 | sanborn02707_003 p1 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.53"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1593.6"},{"label":"split_canvas_y","value":"2784.0"},{"label":"split_canvas_w","value":"4858.4"},{"label":"split_canvas_h","value":"4868.0"}],"created":"2026-10-22T13:42:04Z","modified":"2026-10-22T13:42:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"933.5,1912.0 934.5,1912.0 1585.0,1862.4 1557.7,832.5 1450.3,764.0 1088.8,714.8 452.4,788.9 479.1,972.1 422.9,1030.8 573.0,1146.5 583.0,1146.5 583.1,1146.5 583.0,1154.2 592.6,1161.6 608.1,1658.9 598.2,1781.0 577.9,1793.2 577.9,1793.5 586.0,1829.9 658.0,1894.7 933.5,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1076.2,1766.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1844647,42.313293]}},{"type":"Feature","properties":{"resourceCoords":[1094.2,1069.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.183508,42.3144077]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0001__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"La Porte City, Iowa | 1913 | sanborn02707_003 p1 [5]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.66"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4586.0"},{"label":"split_canvas_w","value":"2332.4"},{"label":"split_canvas_h","value":"3066.0"}],"created":"2026-10-22T13:42:04Z","modified":"2026-10-22T13:42:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0001__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"516.6,1895.0 565.6,1837.7 553.4,1192.5 30.0,1194.4 35.9,1869.6 516.6,1895.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0001__5/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1146.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.19067732073603,42.31772439581694]}},{"type":"Feature","properties":{"resourceCoords":[583.1,1146.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.1894402312009,42.31713474357727]}},{"type":"Feature","properties":{"resourceCoords":[583.1,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.19048943274113,42.31593139407003]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.19172652227626,42.316521046309695]}},{"type":"Feature","properties":{"resourceCoords":[378.1,1841.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.190827,42.3162522]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"La Porte City, Iowa | 1913 | sanborn02707_003 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:42:04Z","modified":"2026-10-22T13:42:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1475.1,67.7 1499.0,1437.3 1508.8,1437.0 1474.3,1889.6 1445.1,1890.2 1445.0,1887.0 37.2,1849.2 54.9,34.3 1418.3,30.8 1421.8,10.2 1475.1,67.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[548.0,1732.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.19200012147866,42.310726329459875]}},{"type":"Feature","properties":{"resourceCoords":[1480.0,978.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.192306823103,42.31291890693563]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"La Porte City, Iowa | 1913 | sanborn02707_003 p3","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:42:04Z","modified":"2026-10-22T13:42:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"96.3,38.9 816.9,53.6 924.0,116.8 1328.9,49.7 1581.4,238.6 1588.5,1683.2 1612.0,1686.8 1612.0,1798.1 970.3,1788.8 279.6,1784.9 69.3,1784.3 85.3,418.0 33.9,359.1 96.3,38.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[980.0,878.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1920698,42.3147906]}},{"type":"Feature","properties":{"resourceCoords":[514.0,878.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1926749,42.3140574]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"La Porte City, Iowa | 1913 | sanborn02707_003 p4 [1]","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"24"},{"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":"2026-10-22T13:42:04Z","modified":"2026-10-22T13:42:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"561.3,1867.3 1151.8,1882.3 1274.8,1782.5 1284.8,1592.7 1288.0,1592.6 1288.0,1591.0 1328.3,1591.0 1578.5,1581.2 1612.0,642.4 1612.0,630.5 1569.4,192.1 1612.0,166.2 1612.0,124.5 1569.2,150.5 1519.7,55.3 1406.2,32.8 72.8,24.3 30.3,296.6 138.8,296.8 128.6,922.5 123.5,1596.2 122.5,1791.7 561.6,1838.8 561.3,1867.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154lm:g027071913:02707_1913-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1008.0,929.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1882319,42.3130271]}},{"type":"Feature","properties":{"resourceCoords":[568.0,1994.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1906068,42.3117387]}}]}}]}