{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01791_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Chillicothe, Illinois | 1907 | 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":"11"},{"label":"placed","value":"8"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 4, georef-snap 3, snap:2 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"2 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 40.91656,-89.48403 +/-127m); p1__3 (tier 1, 40.91687,-89.48358 +/-126m); p6__2 (tier 1, 40.91401,-89.48942 +/-191m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chillicothe, Illinois | 1907 | sanborn01791_003 p1 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"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":"3492.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T20:37:17Z","modified":"2026-10-19T20:37:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"72.9,1602.2 119.0,1818.5 175.0,1846.2 638.5,1836.9 798.9,1759.2 696.2,790.6 770.0,158.9 648.3,52.4 99.2,199.6 54.8,22.5 57.2,340.3 67.3,949.1 72.9,1602.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[82.0,339.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.48382950779366,40.91682653337046]}},{"type":"Feature","properties":{"resourceCoords":[82.0,1540.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.48476358395861,40.91474360411008]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0001__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chillicothe, Illinois | 1907 | sanborn01791_003 p1 [4]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.91"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3492.0"},{"label":"split_canvas_y","value":"3834.8"},{"label":"split_canvas_w","value":"1270.0"},{"label":"split_canvas_h","value":"1421.2"}],"created":"2026-10-19T20:37:17Z","modified":"2026-10-19T20:37:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0001__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1105.9,1313.0 1114.4,1313.0 1116.9,1313.0 1114.4,1092.4 888.1,1093.8 887.3,1274.5 1106.0,1307.7 1105.9,1313.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0001__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[873.0,958.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.49082045536129,40.9199719416099]}},{"type":"Feature","properties":{"resourceCoords":[1190.5,958.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.49008269526745,40.91978281587453]}},{"type":"Feature","properties":{"resourceCoords":[1190.5,1314.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.49036305455415,40.91915514451127]}},{"type":"Feature","properties":{"resourceCoords":[873.0,1314.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.491100814648,40.91934427024665]}},{"type":"Feature","properties":{"resourceCoords":[1114.4,1092.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4903651,40.9195919]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chillicothe, Illinois | 1907 | sanborn01791_003 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T20:37:17Z","modified":"2026-10-19T20:37:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"138.2,1809.8 82.0,1809.8 64.7,1222.3 79.0,1222.6 78.3,635.9 81.4,635.9 45.2,46.0 71.4,46.1 946.0,48.0 1290.0,46.5 1290.0,26.5 1505.3,56.0 1568.0,318.5 1566.5,629.7 1569.2,1225.8 1566.8,1865.3 1560.9,1835.5 716.6,1875.0 361.1,1831.4 138.1,1868.7 138.2,1809.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[946.0,1220.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4857999,40.916148]}},{"type":"Feature","properties":{"resourceCoords":[946.0,48.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4849025,40.9182324]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chillicothe, Illinois | 1907 | sanborn01791_003 p3 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"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":"2026-10-19T20:37:17Z","modified":"2026-10-19T20:37:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"370.4,1822.2 1261.5,1823.6 1612.0,1821.8 1580.6,1797.2 1589.8,402.8 1515.2,79.2 757.9,32.4 676.1,90.0 697.4,392.2 638.0,589.4 632.4,590.4 632.4,591.0 628.8,591.0 382.1,634.2 264.1,623.6 264.1,634.4 77.6,634.1 76.2,1229.4 72.0,1821.3 370.4,1822.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[666.0,639.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.48538579085302,40.92063845271558]}},{"type":"Feature","properties":{"resourceCoords":[96.0,1817.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.48758921622877,40.91890705794406]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chillicothe, Illinois | 1907 | sanborn01791_003 p3 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.07"},{"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":"2548.4"},{"label":"split_canvas_h","value":"2364.0"}],"created":"2026-10-19T20:37:17Z","modified":"2026-10-19T20:37:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"377.0,537.4 597.0,554.5 599.2,491.1 515.2,488.8 463.9,1.0 424.2,1.0 423.7,4.5 28.6,13.1 6.2,166.8 1.8,589.7 183.7,543.2 376.1,564.8 377.0,537.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.49111994012956,40.921971237259314]}},{"type":"Feature","properties":{"resourceCoords":[637.1,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.48943242871555,40.921595612923745]}},{"type":"Feature","properties":{"resourceCoords":[637.1,591.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.48989040776978,40.920404231233626]}},{"type":"Feature","properties":{"resourceCoords":[0.0,591.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.4915779191838,40.920779855569194]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chillicothe, Illinois | 1907 | sanborn01791_003 p4","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T20:37:17Z","modified":"2026-10-19T20:37:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"82.0,1320.2 143.8,1676.8 20.9,1724.4 19.4,1812.3 246.8,1814.0 834.7,1818.7 1418.8,1820.8 1424.0,1232.0 1426.5,639.7 1612.0,640.3 1612.0,632.5 1612.0,629.6 1563.0,625.1 1493.8,55.7 788.7,38.2 77.2,238.1 34.8,669.5 79.3,668.4 154.6,1222.7 249.7,1222.8 249.3,1294.9 1.0,1282.2 1.0,1313.3 82.0,1320.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[839.0,641.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4881065,40.9213137]}},{"type":"Feature","properties":{"resourceCoords":[1424.0,1232.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4871926,40.9199437]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chillicothe, Illinois | 1907 | sanborn01791_003 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T20:37:17Z","modified":"2026-10-19T20:37:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"65.9,246.9 76.9,247.1 76.4,24.8 662.5,27.7 1244.9,27.9 1514.3,28.3 1552.1,624.4 1549.0,624.4 1550.9,1217.3 1536.5,1217.1 1555.2,1810.6 1612.0,1810.5 1612.0,1849.2 1612.0,1870.1 1546.6,1881.2 92.5,1820.7 41.8,1361.7 65.9,247.2 65.9,246.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1248.0,47.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.48765509185644,40.91887782950898]}},{"type":"Feature","properties":{"resourceCoords":[96.0,1210.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.49122316322197,40.91749620121878]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chillicothe, Illinois | 1907 | sanborn01791_003 p6 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.61"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3620.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4032.0"}],"created":"2026-10-19T20:37:17Z","modified":"2026-10-19T20:37:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"86.7,942.6 48.0,1228.9 125.7,1811.9 231.7,1907.3 514.0,1881.2 1365.2,1910.7 1538.5,1852.8 1541.4,1033.1 1446.0,960.8 86.7,942.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017911907:01791_1907-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[960.0,1660.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4941937,40.9286333]}},{"type":"Feature","properties":{"resourceCoords":[1512.0,1660.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.4928118,40.9288006]}}]}}]}