{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn09030_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Highland Springs, Virginia | 1921 | mapsnap generated fit (2026-10-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-22"},{"label":"run","value":"corpus-v2.1"},{"label":"pages","value":"6"},{"label":"placed","value":"5"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 3, georef-snap 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 37.54693,-77.32744 +/-691m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Highland Springs, Virginia | 1921 | sanborn09030_001 p1 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"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":"2026-10-22T13:20:19Z","modified":"2026-10-22T13:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1585.9,228.9 1432.8,118.2 1322.4,86.6 1034.2,88.7 1009.0,116.2 911.2,117.1 843.2,195.8 863.6,756.5 904.9,986.1 859.4,1238.9 304.8,1252.7 287.9,1253.1 118.7,1296.0 76.5,1333.8 57.0,1564.2 100.4,1841.2 432.3,1828.8 431.7,1811.6 995.1,1796.7 995.6,1807.9 1577.9,1786.3 1568.9,1552.5 1554.8,1212.9 1546.1,1141.6 1534.9,1101.7 1455.6,911.2 1346.8,658.2 1319.0,603.0 1364.5,594.4 1455.5,566.4 1585.9,228.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[984.0,1618.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.33207116509753,37.54694923987525]}},{"type":"Feature","properties":{"resourceCoords":[431.0,1807.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.33358671624136,37.54519277514553]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Highland Springs, Virginia | 1921 | sanborn09030_001 p2 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"2026-10-22T13:20:19Z","modified":"2026-10-22T13:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"326.8,93.4 187.6,426.8 96.1,452.3 50.4,459.6 76.6,515.5 178.5,771.0 252.4,963.2 262.6,1003.4 269.4,1074.8 274.3,1414.1 277.0,1647.7 278.5,1826.3 1570.8,1813.3 1570.6,1732.2 1580.9,1732.1 1573.2,878.6 1529.9,599.3 794.9,664.6 794.1,662.9 791.9,663.1 791.1,656.1 737.5,534.5 678.2,120.0 368.0,124.9 326.8,93.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[851.0,1456.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.32789753330522,37.54959829177695]}},{"type":"Feature","properties":{"resourceCoords":[1553.0,1095.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.32639225558994,37.552217964083646]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Highland Springs, Virginia | 1921 | sanborn09030_001 p2 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2868.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3583.6"},{"label":"split_canvas_h","value":"2652.4"}],"created":"2026-10-22T13:20:19Z","modified":"2026-10-22T13:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"782.1,85.5 782.1,297.1 756.9,297.1 774.5,509.1 774.5,509.1 818.4,655.4 1564.5,585.7 1582.8,126.2 1610.0,92.5 1479.0,78.6 1479.0,85.5 782.1,85.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[782.1,297.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.321785,37.5436034]}},{"type":"Feature","properties":{"resourceCoords":[1479.0,297.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.3192588,37.5452181]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Highland Springs, Virginia | 1921 | sanborn09030_001 p3","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"30"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:20:19Z","modified":"2026-10-22T13:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"353.2,76.2 353.2,59.1 912.0,65.9 912.0,77.0 1489.5,77.9 1489.0,255.2 1489.1,470.1 1487.7,689.0 1486.3,1123.9 1481.0,1337.0 1480.2,1779.3 1479.1,1843.7 1459.4,1879.7 1384.5,1838.0 1082.4,1820.3 610.6,1878.0 496.7,1837.8 105.7,1819.0 31.6,1093.2 31.1,644.1 69.4,462.5 23.9,75.7 353.2,76.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[910.0,905.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.329101,37.544051]}},{"type":"Feature","properties":{"resourceCoords":[1481.0,1337.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.3257853,37.5441363]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Highland Springs, Virginia | 1921 | sanborn09030_001 p4","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"27"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:20:19Z","modified":"2026-10-22T13:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"79.1,1830.7 290.5,1830.3 506.0,1831.3 934.0,1832.0 1143.8,1836.9 1579.0,1837.0 1579.0,1265.0 1579.0,575.8 1572.2,575.8 1585.9,446.3 1571.4,434.6 1559.2,225.2 1583.2,160.9 1571.8,175.0 1508.6,40.4 1472.9,67.4 1447.0,41.9 1417.0,73.4 1302.0,31.8 1051.0,15.0 133.3,13.2 45.7,35.5 30.3,83.4 49.0,497.8 19.5,557.5 1.0,557.4 1.0,567.5 79.2,568.1 79.1,1830.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884hm:g3884hm_g090301921:09030_1921-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[934.0,1265.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.3243089,37.5460856]}},{"type":"Feature","properties":{"resourceCoords":[506.0,1265.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.3255736,37.5473294]}}]}}]}