{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn09078_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Strasburg, Virginia | 1923 | mapsnap generated fit (2026-10-24)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-24"},{"label":"run","value":"corpus-v2.2"},{"label":"pages","value":"13"},{"label":"placed","value":"8"},{"label":"unplaced","value":"5"},{"label":"fit sources","value":"georef-snap 4, georef 3, georef-street 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"2 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 38.98819,-78.35937 +/-783m); p1__2 (tier 4, 38.98819,-78.35937 +/-783m); p1__3 (tier 4, 38.98819,-78.35937 +/-783m); p1__4 (tier 4, 38.98819,-78.35937 +/-783m); p1__5 (tier 4, 38.98819,-78.35937 +/-783m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Strasburg, Virginia | 1923 | sanborn09078_003 p2","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:37:16Z","modified":"2026-10-24T15:37:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"32.8,1824.4 32.1,1167.6 94.7,1168.6 65.7,521.2 85.5,521.5 129.1,144.2 148.4,211.8 543.7,25.2 1251.2,130.4 1310.4,57.0 1479.9,106.8 1509.6,81.5 1505.1,113.5 1551.8,138.5 1508.8,543.7 1525.1,584.6 1524.5,1191.4 1528.5,1337.6 1527.0,1839.0 32.8,1824.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1527.0,544.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.3613225,38.9904246]}},{"type":"Feature","properties":{"resourceCoords":[1527.0,1839.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.3623143,38.9881371]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Strasburg, Virginia | 1923 | sanborn09078_003 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:37:16Z","modified":"2026-10-24T15:37:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"888.9,1843.5 481.1,1838.2 139.7,1836.3 144.0,1330.5 140.9,1183.0 144.9,570.9 128.7,529.6 174.4,121.0 277.3,176.8 455.1,202.6 774.0,27.9 984.1,35.3 1048.6,114.0 1462.0,38.8 1574.7,239.9 1569.5,520.8 1497.6,559.5 1446.2,557.5 1452.3,1211.4 1484.0,1212.0 1474.0,1855.3 888.9,1843.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1466.0,552.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.35836210181508,38.989620759710185]}},{"type":"Feature","properties":{"resourceCoords":[134.0,1847.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.36233507066862,38.98812172788654]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Strasburg, Virginia | 1923 | sanborn09078_003 p4","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:37:16Z","modified":"2026-10-24T15:37:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"141.8,691.5 111.1,691.1 99.0,57.0 148.9,58.3 218.4,20.1 218.3,25.2 1512.8,61.3 1486.4,137.7 1543.0,215.6 1476.9,372.9 1584.8,710.2 1600.9,1064.0 1547.7,1456.3 1579.3,1789.8 1521.7,1884.3 312.7,1878.8 311.4,1883.0 136.8,1782.1 138.2,1315.6 141.8,691.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.35859492271057,38.98978629990787]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.35486112439045,38.98879152235711]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.35637622308603,38.985343285314805]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.36011002140614,38.98633806286556]}},{"type":"Feature","properties":{"resourceCoords":[99.0,57.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.3584109,38.9896225]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Strasburg, Virginia | 1923 | sanborn09078_003 p5 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4146.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3506.0"}],"created":"2026-10-24T15:37:16Z","modified":"2026-10-24T15:37:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"111.8,1912.0 114.0,1905.6 1533.2,1895.7 1609.0,1653.7 1431.2,1551.0 1435.0,1077.1 854.8,1070.8 450.5,1069.4 111.9,1070.7 113.4,1338.6 110.8,1734.5 106.6,1912.0 111.8,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1036.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.36254196024814,38.988265235901345]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1036.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.35888157950355,38.98729463628313]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.35955575136967,38.98573678425091]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.36321613211426,38.986707383869124]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0005__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Strasburg, Virginia | 1923 | sanborn09078_003 p5 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"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":"4146.0"}],"created":"2026-10-24T15:37:16Z","modified":"2026-10-24T15:37:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0005__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"58.6,88.7 39.2,694.8 136.8,939.4 535.5,951.8 596.5,1035.5 1488.4,1035.3 1544.8,1032.2 1601.2,853.0 1596.1,853.1 1595.2,677.5 1586.7,286.0 1577.8,21.2 109.5,47.6 1.0,49.4 1.0,88.2 58.6,88.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0005__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1567.0,680.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.36289444221816,38.98697145048896]}},{"type":"Feature","properties":{"resourceCoords":[1567.0,41.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.36235566280436,38.98810886124407]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Strasburg, Virginia | 1923 | sanborn09078_003 p6","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.69"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:37:16Z","modified":"2026-10-24T15:37:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1543.5,561.8 1524.0,561.6 1557.4,1200.2 1495.6,1199.6 1501.2,1847.7 1391.2,1847.3 1390.4,1886.2 862.0,1871.6 698.5,1792.1 477.2,1785.5 279.6,1891.5 33.1,1855.8 32.3,322.4 110.5,46.1 993.2,20.7 1341.7,89.2 1445.0,38.4 1561.0,111.7 1583.7,189.2 1543.5,561.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.3676814,38.9932775]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.3639757,38.9922826]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.3654938,38.9888667]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.3691995,38.9898616]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0007__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Strasburg, Virginia | 1923 | sanborn09078_003 p7 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.55"},{"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":"2026-10-24T15:37:16Z","modified":"2026-10-24T15:37:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1556.3,1046.5 1604.2,457.9 1549.8,118.2 1389.2,57.9 1158.6,110.3 842.4,24.5 377.4,35.5 38.8,155.4 26.2,1339.6 91.4,1668.2 40.3,1854.9 283.6,1900.5 734.4,1828.7 806.5,1076.4 806.5,1052.0 808.9,1052.0 809.3,1047.5 1556.3,1046.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[695.0,180.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.3509529,38.987568]}},{"type":"Feature","properties":{"resourceCoords":[1568.0,180.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.3488852,38.9869984]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0007__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Strasburg, Virginia | 1923 | sanborn09078_003 p7 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.70"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3226.0"},{"label":"split_canvas_y","value":"4208.0"},{"label":"split_canvas_w","value":"3226.0"},{"label":"split_canvas_h","value":"3444.0"}],"created":"2026-10-24T15:37:16Z","modified":"2026-10-24T15:37:16Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0007__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 1613.0,1052.0 806.5,1052.0 806.5,1913.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884sm:g3884sm_g090781923:09078_1923-0007__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[806.5,1052.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.35113269566858,38.98762390986773]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1052.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.34932130646777,38.98716374741312]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.34994849637717,38.98565094180387]}},{"type":"Feature","properties":{"resourceCoords":[806.5,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.35175988557798,38.98611110425848]}}]}}]}