{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn04900_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Unionville, Missouri | 1909 | mapsnap generated fit (2026-10-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-20"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"9"},{"label":"placed","value":"4"},{"label":"unplaced","value":"5"},{"label":"fit sources","value":"georef 3, 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 1, 40.47602,-92.99501 +/-183m); p1__3 (tier 4, 40.47710,-93.00547 +/-462m); p1__4 (tier 4, 40.47710,-93.00547 +/-462m); p1__5 (tier 4, 40.47710,-93.00547 +/-462m); p4__2 (tier 1, 40.47929,-92.99824 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000010__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Unionville, Missouri | 1909 | sanborn04900_003 p1 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.67"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3383.6"},{"label":"split_canvas_w","value":"8888.0"},{"label":"split_canvas_h","value":"7108.4"}],"created":"2026-10-20T03:49:05Z","modified":"2026-10-20T03:49:05Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000010__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000010","type":"ImageService3","width":2222,"height":2623},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1978.7,881.0 94.0,912.5 112.4,1091.4 621.0,1092.7 658.5,1149.3 664.3,2542.7 890.2,2618.6 2048.9,2565.1 2069.1,2610.9 2087.6,2246.4 2094.9,1792.8 2083.0,1504.5 2090.7,1184.2 2088.2,904.6 1978.8,904.8 1978.7,881.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000010__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1371.0,905.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0104253,40.4786601]}},{"type":"Feature","properties":{"resourceCoords":[2083.0,1504.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0090818,40.4778049]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Unionville, Missouri | 1909 | sanborn04900_003 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:49:05Z","modified":"2026-10-20T03:49:05Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000020","type":"ImageService3","width":2208,"height":2614},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1.0,699.0 1.0,723.8 113.2,723.8 115.1,1013.3 106.3,1345.0 118.0,1643.4 109.3,2113.1 89.2,2490.4 107.0,2530.8 2066.0,2569.9 2069.2,2613.0 2130.6,2613.0 2117.5,2295.8 2114.3,1954.7 2116.8,1667.9 2130.5,1350.8 2127.3,994.0 2019.7,132.8 1873.8,73.6 168.0,84.5 70.0,181.5 67.4,698.1 1.0,699.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[837.0,1351.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0077524606968,40.47780165890504]}},{"type":"Feature","properties":{"resourceCoords":[1482.0,735.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.00658457577215,40.478658640252945]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Unionville, Missouri | 1909 | sanborn04900_003 p3","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:49:05Z","modified":"2026-10-20T03:49:05Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000030","type":"ImageService3","width":2228,"height":2625},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"128.7,1320.3 124.7,977.3 126.5,688.9 139.6,370.0 150.1,126.0 1855.7,71.9 2022.2,140.9 2051.8,366.2 2050.8,987.7 2053.4,2246.0 2055.5,2532.6 300.4,2527.8 143.8,2449.0 80.8,1639.4 142.5,1639.2 128.7,1320.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000030/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1424.0,1624.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0030689,40.4760899]}},{"type":"Feature","properties":{"resourceCoords":[799.0,369.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.0042059,40.4778148]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000040__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Unionville, Missouri | 1909 | sanborn04900_003 p4 [1]","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"23"},{"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":"8832.0"},{"label":"split_canvas_h","value":"10452.0"}],"created":"2026-10-20T03:49:05Z","modified":"2026-10-20T03:49:05Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000040__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000040","type":"ImageService3","width":2208,"height":2613},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"75.4,381.8 75.3,1004.2 80.0,2264.7 82.5,2551.7 2123.9,2554.1 2136.4,188.1 2028.6,70.1 742.5,49.0 418.5,107.5 349.0,306.6 349.0,326.0 342.2,326.0 339.7,333.2 75.4,381.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164um:g04900003:sb000040__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1304.0,379.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.9997199,40.4778291]}},{"type":"Feature","properties":{"resourceCoords":[707.0,1005.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.000797,40.476968]}}]}}]}