{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn07521_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Belle Vernon, Pennsylvania | 1918 | 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":"15"},{"label":"placed","value":"3"},{"label":"unplaced","value":"12"},{"label":"fit sources","value":"georef 3"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 12 panels"},{"label":"unplaced pages","value":"p1__1 (tier 3, 13.28160,-26.43753 +/-2263237m); p4__1 (tier 2, 40.12889,-79.87062 +/-100m); p4__2 (tier 2, 40.12889,-79.87062 +/-100m); p5 (tier 2, 40.13004,-79.86477 +/-100m); p6__1 (tier 2, 40.12486,-79.86748 +/-254m); p6__2 (tier 2, 40.12486,-79.86748 +/-254m); p6__3 (tier 2, 40.12486,-79.86748 +/-254m); p7__1 (tier 2, 40.12685,-79.86853 +/-100m); p8__1 (tier 2, 40.12900,-79.86235 +/-100m); p8__2 (tier 2, 40.12900,-79.86235 +/-100m); p9__1 (tier 3, 17.54495,-34.92302 +/-541690m); p9__2 (tier 3, 17.54495,-34.92302 +/-541690m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075211918:07521_1918-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Belle Vernon, Pennsylvania | 1918 | sanborn07521_005 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.51"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T19:13:21Z","modified":"2026-10-19T19:13:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075211918:07521_1918-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075211918:07521_1918-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1467.5,1805.6 615.2,1887.0 297.5,1860.7 175.2,1780.2 296.6,1525.0 303.9,1218.2 225.4,1053.5 158.8,1083.7 43.2,738.7 156.9,572.1 181.8,339.2 617.2,104.0 1039.0,19.6 1233.2,50.1 1438.0,200.6 1519.7,201.3 1539.3,1333.3 1551.6,1332.9 1542.7,1545.8 1533.7,1545.7 1531.9,1724.7 1546.0,1724.5 1548.3,1852.9 1467.5,1805.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075211918:07521_1918-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1430.0,492.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8711895,40.128488]}},{"type":"Feature","properties":{"resourceCoords":[358.0,1344.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8744748,40.1281162]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075211918:07521_1918-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Belle Vernon, Pennsylvania | 1918 | sanborn07521_005 p3","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.63"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T19:13:21Z","modified":"2026-10-19T19:13:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075211918:07521_1918-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075211918:07521_1918-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"171.9,46.5 188.2,1182.8 200.5,1182.3 190.9,1396.0 181.9,1395.9 179.6,1575.6 193.8,1575.4 195.6,1704.2 433.0,1844.2 1498.0,1821.6 1546.7,1759.9 1507.9,1091.6 1612.0,1026.8 1612.0,1019.7 1612.0,1009.8 1320.3,725.7 1402.2,724.0 1392.8,303.6 1488.2,301.8 829.2,74.3 759.7,1.0 526.1,1.0 505.6,50.9 171.9,46.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075211918:07521_1918-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[81.0,338.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8711895,40.128488]}},{"type":"Feature","properties":{"resourceCoords":[1415.0,1388.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.869659,40.1255779]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075211918:07521_1918-0007__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Belle Vernon, Pennsylvania | 1918 | sanborn07521_005 p7 [2]","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.04"},{"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":"2026-10-19T19:13:21Z","modified":"2026-10-19T19:13:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075211918:07521_1918-0007__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075211918:07521_1918-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"107.6,93.0 137.7,130.6 130.7,180.8 246.8,506.0 216.6,469.7 57.0,603.5 30.9,572.3 10.7,780.3 43.1,791.8 48.1,1046.2 80.4,1062.8 96.3,1131.2 253.9,1204.7 205.1,1329.2 125.2,1344.5 311.9,1344.0 389.3,1374.4 441.6,1468.7 445.3,1617.8 622.2,1671.7 734.1,1832.1 887.2,1837.8 1072.2,1782.2 1426.7,1878.7 1551.2,1818.8 1592.7,1069.8 1565.0,219.9 1526.4,61.0 1315.3,24.8 933.2,18.5 136.1,20.3 65.8,40.8 107.6,93.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075211918:07521_1918-0007__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1427.0,932.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8620782,40.1273799]}},{"type":"Feature","properties":{"resourceCoords":[977.0,1407.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8632752,40.125117]}}]}}]}