{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01957_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"La Harpe, Illinois | 1906 | 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":"5"},{"label":"placed","value":"4"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 3, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 3 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 40.58246,-90.96676 +/-358m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"La Harpe, Illinois | 1906 | sanborn01957_003 p1 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.74"},{"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":"3028.8"},{"label":"split_canvas_h","value":"3348.0"}],"created":"2026-10-19T01:27:13Z","modified":"2026-10-19T01:27:13Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"585.5,39.3 38.9,24.5 31.1,801.0 539.4,828.2 539.9,811.5 613.2,812.0 654.4,813.0 694.6,214.0 710.6,214.4 658.1,1.0 611.1,1.0 585.5,39.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[613.1,812.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.968102,40.5834918]}},{"type":"Feature","properties":{"resourceCoords":[613.1,212.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.9681031,40.5846175]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"La Harpe, Illinois | 1906 | sanborn01957_003 p1 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"3090.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4562.0"}],"created":"2026-10-19T01:27:13Z","modified":"2026-10-19T01:27:13Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"48.7,857.4 65.3,1886.9 1261.4,1750.7 1314.5,1874.0 1555.5,1862.8 1553.9,862.3 1399.6,806.4 757.2,830.6 757.2,837.0 757.2,837.0 589.7,837.0 48.7,857.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[625.0,846.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.96813797615471,40.58025002330331]}},{"type":"Feature","properties":{"resourceCoords":[58.0,846.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.96951633093585,40.58026695520757]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"La Harpe, Illinois | 1906 | sanborn01957_003 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.55"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:27:13Z","modified":"2026-10-19T01:27:13Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"418.3,581.6 741.2,49.1 783.8,49.2 804.3,22.3 1444.8,25.1 1515.8,81.2 1562.6,1819.4 961.9,1823.4 678.5,1719.2 354.2,1841.5 191.7,1842.6 84.9,1723.1 93.6,1594.8 354.6,1210.7 419.0,1211.0 418.3,581.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[419.0,1211.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.9653342,40.58234]}},{"type":"Feature","properties":{"resourceCoords":[419.0,631.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.9653246,40.5834471]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"La Harpe, Illinois | 1906 | sanborn01957_003 p3","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.72"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:27:13Z","modified":"2026-10-19T01:27:13Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"38.4,985.1 70.5,1868.3 890.3,1881.2 908.7,1912.0 1144.3,1548.7 1209.8,1547.6 1195.2,907.8 1511.8,359.4 1555.0,358.6 1575.3,330.8 1572.5,330.9 1521.8,59.1 1448.9,25.2 291.8,29.1 92.1,85.0 48.4,154.8 94.4,153.5 153.3,366.1 137.3,366.2 114.5,965.6 73.2,965.9 1.0,967.4 1.0,984.2 38.4,985.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104lm:g019571906:01957_1906-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1197.0,958.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.9653246,40.5834471]}},{"type":"Feature","properties":{"resourceCoords":[654.0,1557.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.9667081,40.5823517]}}]}}]}