{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02021_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Monticello, Illinois | 1887 | 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":"5"},{"label":"placed","value":"2"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 40.02998,-88.56733 +/-100m); p1__3 (tier 1, 40.01945,-88.57395 +/-100m); p2__2 (tier 4, 40.02508,-88.57197 +/-153m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020211887:02021_1887-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monticello, Illinois | 1887 | sanborn02021_001 p1 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"25"},{"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":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T07:07:18Z","modified":"2026-10-18T07:07:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020211887:02021_1887-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020211887:02021_1887-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"92.6,1799.2 93.8,1912.0 96.0,1912.0 125.2,1818.0 695.9,1753.5 715.4,1620.8 832.9,1577.0 1552.3,1544.4 1593.2,316.5 1569.9,131.3 1495.0,53.9 391.8,26.3 90.9,49.7 71.2,141.2 67.9,451.2 61.9,655.0 63.3,853.6 72.0,1167.3 90.2,1561.9 92.6,1799.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020211887:02021_1887-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[895.0,838.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.5699271,40.0252214]}},{"type":"Feature","properties":{"resourceCoords":[485.0,1559.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.5711462,40.0239733]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020211887:02021_1887-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monticello, Illinois | 1887 | sanborn02021_001 p2 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"24"},{"label":"confidence","value":"0.92"},{"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":"2026-10-18T07:07:18Z","modified":"2026-10-18T07:07:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020211887:02021_1887-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020211887:02021_1887-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1550.4,1698.6 1550.8,1457.8 1537.3,1057.3 1532.2,739.0 1533.3,537.5 1541.9,330.8 1549.1,16.3 1535.9,74.2 1472.3,30.1 719.5,49.6 534.6,99.9 436.4,396.9 62.3,395.4 58.5,1847.2 1529.0,1885.6 1552.4,1813.2 1550.4,1698.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g020211887:02021_1887-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1213.0,742.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.572725,40.0254485]}},{"type":"Feature","properties":{"resourceCoords":[1213.0,1462.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.5729214,40.0241235]}}]}}]}