{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00958_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Boulder, Colorado | 1886 | 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":"5"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef 5"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 9 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 40.17006,-105.07617 +/-210m); p1__3 (tier 4, 40.01755,-105.28133 +/-503m); p1__4 (tier 4, 40.01755,-105.28133 +/-503m); p1__5 (tier 4, 40.01755,-105.28133 +/-503m); p1__6 (tier 4, 40.01755,-105.28133 +/-503m); p1__7 (tier 4, 40.01755,-105.28133 +/-503m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boulder, Colorado | 1886 | sanborn00958_002 p1 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.71"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3098.8"},{"label":"split_canvas_w","value":"1962.8"},{"label":"split_canvas_h","value":"1426.4"}],"created":"2026-10-19T02:31:31Z","modified":"2026-10-19T02:31:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"487.8,851.0 187.4,791.3 20.4,876.0 18.6,1042.0 306.8,1074.2 329.3,1057.1 319.5,1019.2 489.0,975.2 487.8,851.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,774.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-105.28674209007727,40.017102539928594]}},{"type":"Feature","properties":{"resourceCoords":[490.7,774.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-105.28554428005805,40.017113112177704]}},{"type":"Feature","properties":{"resourceCoords":[490.7,1131.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-105.28553423627855,40.01644656390503]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1131.3],"type":"corner"},"geometry":{"type":"Point","coordinates":[-105.28673204629777,40.01643599165592]}},{"type":"Feature","properties":{"resourceCoords":[83.0,1080.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-105.286531,40.016533]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boulder, Colorado | 1886 | sanborn00958_002 p2","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T02:31:31Z","modified":"2026-10-19T02:31:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"64.9,1725.4 81.0,1447.4 78.6,1215.4 107.7,1213.0 124.5,369.9 99.5,370.0 103.4,61.9 1455.0,39.7 1594.9,159.3 1532.9,307.1 1570.5,362.1 1518.2,669.4 1574.8,961.0 1584.8,1845.5 318.1,1887.8 64.5,1874.7 64.9,1725.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1194.0,938.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-105.2747429,40.0189701]}},{"type":"Feature","properties":{"resourceCoords":[79.0,370.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-105.2777293,40.0194571]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boulder, Colorado | 1886 | sanborn00958_002 p3","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T02:31:31Z","modified":"2026-10-19T02:31:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"133.6,138.7 324.9,31.8 887.5,74.0 1357.4,64.3 1354.8,375.9 1380.1,375.7 1366.6,1228.3 1337.2,1230.8 1340.6,1465.5 1325.5,1746.7 1325.7,1897.7 217.8,1845.8 212.8,1532.8 212.4,1264.1 214.8,790.6 212.0,672.6 216.3,383.2 213.8,139.1 133.6,138.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[775.0,376.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-105.2790338,40.0191944]}},{"type":"Feature","properties":{"resourceCoords":[1334.0,376.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-105.2777293,40.0194571]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boulder, Colorado | 1886 | sanborn00958_002 p4 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.03"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5362.0"},{"label":"split_canvas_w","value":"5150.0"},{"label":"split_canvas_h","value":"2290.0"}],"created":"2026-10-19T02:31:31Z","modified":"2026-10-19T02:31:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"59.3,1566.7 54.6,1911.8 1027.2,1874.0 1027.2,1866.4 1228.9,1866.2 1240.2,1537.7 1167.8,1536.2 1169.6,1401.8 934.0,1456.8 733.6,1375.9 379.9,1466.8 244.0,1401.5 208.3,1544.8 1.0,1545.0 1.0,1591.0 59.3,1566.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[405.1,1543.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-105.2851538,40.0168213]}},{"type":"Feature","properties":{"resourceCoords":[1079.4,1543.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-105.2838185,40.0170982]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boulder, Colorado | 1886 | sanborn00958_002 p4 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.82"},{"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":"2026-10-19T02:31:31Z","modified":"2026-10-19T02:31:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"120.3,1112.2 156.2,1232.8 378.9,1319.7 1287.8,1337.5 1328.6,1786.2 1446.8,1846.2 1509.7,1832.7 1555.9,1681.6 1549.2,1373.2 1547.3,1108.5 1546.8,641.9 1543.4,525.6 1546.0,240.4 1542.1,1.0 1461.2,1.0 1416.3,26.4 1112.6,52.5 1028.5,120.0 990.4,65.6 941.3,112.4 891.1,47.6 721.9,41.3 592.4,112.0 358.5,126.2 193.3,46.7 100.4,119.4 21.4,745.2 1.0,709.1 1.0,820.1 60.6,820.5 54.9,1096.2 120.3,1112.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd431m:g4314m:g4314bm:g009581886:00958_1886-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[434.0,819.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-105.2826185,40.0173496]}},{"type":"Feature","properties":{"resourceCoords":[984.0,253.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-105.2816585,40.0186342]}}]}}]}