{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn09010_008.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Danville, Virginia | 1920 | 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":"81"},{"label":"placed","value":"54"},{"label":"unplaced","value":"27"},{"label":"fit sources","value":"georef-snap 40, georef 20, snap:0 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"12 sheet(s) cut into 29 panels"},{"label":"unplaced pages","value":"p16__2 (tier 1, 36.57993,-79.39316 +/-100m); p28__2 (tier 2, 36.57792,-79.39567 +/-614m); p30 (tier 2, 36.58798,-79.40556 +/-199m); p36__1 (tier 1, 36.59864,-79.39347 +/-184m); p38__1 (tier 1, 36.59655,-79.39445 +/-211m); p38__2 (tier 1, 36.59065,-79.38552 +/-202m); p46__2 (tier 1, 36.59733,-79.38019 +/-168m); p46__3 (tier 1, 36.56282,-79.44099 +/-106m); p51 (tier 1, 36.57164,-79.39677 +/-258m); p52__1 (tier 1, 36.57310,-79.42505 +/-421m); p52__2 (tier 1, 36.56805,-79.42246 +/-434m); p53__1 (tier 1, 36.56661,-79.43098 +/-100m); p55__1 (tier 1, 36.56786,-79.42780 +/-126m); p55__2 (tier 2, 36.56807,-79.42747 +/-100m); p55__3 (tier 1, 36.57700,-79.42748 +/-100m); p56__1 (tier 1, 36.59696,-79.39527 +/-141m); p56__2 (tier 1, 36.59701,-79.39592 +/-100m); p56__3 (tier 1, 36.59773,-79.39654 +/-100m); p56__4 (tier 1, 36.59675,-79.39540 +/-182m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p1","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"245.7,1688.2 249.2,1577.7 272.6,824.9 126.5,835.0 298.8,751.0 299.0,657.4 256.9,685.8 239.8,2.3 281.5,40.2 1135.7,71.3 1163.8,24.9 1401.1,188.2 1291.8,217.1 1302.3,274.1 1051.3,879.9 887.5,1259.5 697.9,1677.3 686.0,1729.0 245.7,1688.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1226.0,461.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.392094,36.58893]}},{"type":"Feature","properties":{"resourceCoords":[686.0,1729.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.395055,36.587955]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p10","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1404.2,1833.3 795.2,1858.8 795.2,1865.2 347.1,1851.9 346.4,1282.2 348.1,788.7 345.1,641.8 89.4,642.2 91.0,91.0 440.7,95.7 960.9,97.5 1214.6,97.0 1480.6,641.9 1403.1,641.4 1404.0,1282.0 1389.0,1281.6 1397.2,1613.7 1404.2,1833.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[798.0,1281.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.385764,36.5815633]}},{"type":"Feature","properties":{"resourceCoords":[91.0,91.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.385166,36.584045]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.63"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"99.1,1870.0 399.5,1898.8 1539.7,1883.6 1612.0,1639.0 1612.0,1626.6 1605.8,1572.2 1585.2,1037.9 1568.6,192.2 1566.4,42.1 940.5,51.4 940.5,36.6 616.1,49.0 280.5,64.1 114.5,75.1 88.4,76.1 20.9,1579.5 1.0,1580.0 1.0,1644.1 99.1,1870.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.38629976945953,36.579594526722126]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.38376764554543,36.58181899033002]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.38050540224434,36.5793903952143]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.38303752615843,36.5771659316064]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.21"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"85.0,371.6 629.5,108.0 629.3,55.8 1612.0,91.9 1612.0,104.3 1561.7,148.9 1612.0,372.1 1529.8,623.6 1533.6,927.7 1611.7,1215.5 1499.1,1821.2 1223.7,1877.2 969.5,1834.8 119.0,1875.3 105.5,1912.0 105.0,1912.0 96.8,1860.8 85.8,1313.6 84.8,447.6 85.0,371.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.38439520874903,36.58194175607293]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.38197129041596,36.58415103457215]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.37873118261888,36.58182631701557]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.38115510095194,36.579617038516346]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0013__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p13 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.94"},{"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":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0013__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"306.4,543.7 14.0,529.8 67.0,705.4 558.8,1767.0 647.0,1769.1 845.7,1768.8 1174.0,1763.5 1491.8,1760.9 1485.2,1569.5 1422.8,967.1 1365.0,492.0 1126.0,520.8 823.5,544.5 802.1,253.3 789.8,92.2 322.2,102.0 306.4,543.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0013__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1365.0,492.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.395261,36.586189]}},{"type":"Feature","properties":{"resourceCoords":[394.0,1763.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.398921,36.585714]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0013__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p13 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.47"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3386.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3065.6"},{"label":"split_canvas_h","value":"1977.6"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0013__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1302.2,37.0 872.6,37.0 903.4,434.6 1352.9,373.8 1305.2,124.4 1301.1,66.8 1302.2,37.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0013__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1302.2,37.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.395055,36.587955]}},{"type":"Feature","properties":{"resourceCoords":[872.6,37.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.395716,36.588586]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1312.3,1638.9 1184.5,1636.8 1058.9,1625.0 788.1,1607.7 574.9,1587.0 249.2,1551.6 249.0,1359.5 206.5,753.3 164.4,275.0 862.9,233.8 931.0,239.7 1241.0,270.8 1301.3,283.8 1379.8,284.7 1540.7,300.9 1514.6,881.8 1507.5,882.1 1504.2,1629.6 1312.3,1638.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[894.0,268.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.393988469833,36.58530128865277]}},{"type":"Feature","properties":{"resourceCoords":[894.0,1615.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39605192770709,36.583430655676935]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1279.4,1848.3 1044.8,1690.4 1044.6,1685.9 532.8,1627.5 412.9,1635.2 149.0,1641.0 172.1,881.9 179.3,881.7 221.1,292.4 521.6,330.4 516.4,210.7 949.2,183.7 945.6,132.4 1394.3,126.3 1403.2,272.0 1422.5,596.3 1440.9,1173.2 1451.1,1294.8 1438.5,1420.6 1420.5,1488.8 1279.4,1848.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[563.0,592.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39276365597664,36.58363971276106]}},{"type":"Feature","properties":{"resourceCoords":[1419.0,1467.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39255379138072,36.581411157762986]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0016__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p16 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"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":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0016__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"930.1,1675.0 923.1,1702.5 920.5,1712.8 1436.7,1775.3 1457.6,1217.3 1472.4,902.8 1484.4,584.4 1503.2,266.6 1509.2,117.9 1494.7,84.7 711.6,72.1 711.9,69.2 177.2,93.0 186.1,268.2 201.9,589.0 214.3,1159.5 223.3,1279.8 209.6,1404.0 191.1,1471.2 34.8,1858.0 30.9,1862.9 449.2,1896.7 493.1,1786.0 530.3,1648.0 533.2,1648.0 846.9,1648.0 846.9,1648.0 888.5,1661.5 930.1,1675.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0016__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1458.0,1777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39078059858024,36.57945552340869]}},{"type":"Feature","properties":{"resourceCoords":[1458.0,68.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38828197628892,36.58189221040717]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1427.7,1912.0 1367.0,1910.2 1147.5,1881.8 950.0,1866.8 629.4,1847.7 311.0,1814.0 59.3,1794.0 55.4,1229.5 56.2,911.3 54.1,589.1 58.9,267.4 58.2,117.0 26.4,52.0 67.5,68.1 201.1,99.5 500.6,146.4 499.8,35.3 947.7,45.9 947.7,39.5 1556.2,10.4 1560.8,134.3 1570.8,304.2 1579.0,593.8 1580.4,1471.3 1578.8,1704.7 1496.7,1811.1 1427.7,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[51.0,1767.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39078888326445,36.57952972899635]}},{"type":"Feature","properties":{"resourceCoords":[1580.0,336.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38602484153324,36.57960272974022]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p18","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6.9,94.2 44.9,349.6 149.3,1205.1 175.1,1432.9 107.5,1546.3 46.4,1663.7 1.0,1750.9 1.0,1797.8 359.5,1912.0 390.4,1912.0 410.1,1889.5 1539.7,1874.6 1586.7,1809.8 1612.0,756.5 1612.0,742.2 1526.5,159.0 1572.8,83.9 1529.1,45.8 1579.7,17.0 1550.7,20.1 1518.1,23.5 1515.2,2.7 6.9,94.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[898.0,1741.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.3875472423805,36.57635602503207]}},{"type":"Feature","properties":{"resourceCoords":[40.0,67.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38593341747725,36.57960672222731]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.53"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1013.9,1674.9 393.6,1574.5 328.9,1630.1 223.7,1727.6 165.7,1678.9 270.6,1576.4 32.4,1205.3 156.4,1088.0 178.0,494.4 361.8,199.8 603.2,61.9 926.9,127.6 1457.8,359.3 1552.0,258.3 1562.8,1003.9 1534.7,1003.7 1564.0,1714.7 1013.9,1674.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[995.0,1682.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39873919386599,36.591508133933104]}},{"type":"Feature","properties":{"resourceCoords":[1546.0,1682.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.3978185470677,36.59080870278508]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p2","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"487.7,1810.9 180.3,1832.9 160.5,1537.0 130.8,1108.6 138.7,1017.5 152.2,965.3 356.8,545.7 534.1,164.2 1031.0,390.0 1551.1,637.4 1541.0,914.1 1531.5,1306.9 1517.8,1436.1 1505.4,1727.0 1436.2,1722.9 730.6,1783.3 487.7,1810.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[684.0,1157.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.3943628,36.587086]}},{"type":"Feature","properties":{"resourceCoords":[1031.0,390.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.392589,36.587679]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0020","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"699.8,1727.2 87.5,1698.8 41.6,990.9 69.5,990.4 41.4,247.6 105.0,176.0 450.0,172.3 651.4,34.1 1345.8,196.6 1490.3,125.1 1550.9,180.1 1569.7,867.9 1612.0,839.3 1612.0,933.5 1438.8,1018.5 1585.9,1008.0 1564.0,1765.7 699.8,1727.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1570.0,992.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39426311654718,36.5897377084243]}},{"type":"Feature","properties":{"resourceCoords":[1570.0,1737.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39547352814463,36.58875784265225]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p21","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0021","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"196.8,1402.7 110.1,1396.1 91.4,1020.6 82.4,777.0 58.9,375.2 679.0,393.1 1554.0,417.0 1552.6,529.6 1556.6,1396.2 1259.0,1394.0 196.8,1402.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1259.0,1394.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.397595,36.587867]}},{"type":"Feature","properties":{"resourceCoords":[1554.0,417.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39553,36.588728]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0022__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p22 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"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":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0022__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"708.6,1684.0 829.0,1298.3 1010.1,685.3 1118.0,347.4 812.4,256.0 495.8,163.9 305.0,105.4 64.2,24.7 62.8,326.9 67.4,524.6 65.8,963.5 75.4,1283.2 75.7,1454.4 52.0,1651.2 47.8,1708.3 663.5,1833.8 708.6,1684.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0022__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[69.0,1264.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.40017888562849,36.58365050955358]}},{"type":"Feature","properties":{"resourceCoords":[69.0,-3.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.3988825421113,36.58575610722747]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0022__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p22 [2]","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":"2989.2"},{"label":"split_canvas_y","value":"2926.0"},{"label":"split_canvas_w","value":"3462.8"},{"label":"split_canvas_h","value":"4726.0"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0022__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1558.3,1799.5 1578.4,1589.7 1586.3,1460.6 1591.7,1168.9 1592.6,846.1 957.8,902.4 985.7,1029.9 995.4,1097.8 964.5,1187.4 805.9,1391.2 774.7,1496.8 869.2,1589.8 1003.5,1725.3 1101.6,1788.5 1158.7,1801.5 1277.6,1810.0 1453.4,1799.8 1558.3,1799.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0022__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1076.2,1759.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.40180708278557,36.581634774182646]}},{"type":"Feature","properties":{"resourceCoords":[1572.0,1759.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.40098012840926,36.58101800498377]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p23","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0023","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"342.0,730.0 342.3,691.0 343.5,555.9 951.4,185.8 1010.1,218.2 1023.5,225.6 1033.1,230.9 1163.9,294.9 1372.9,413.2 1346.5,595.6 1266.5,1206.5 1301.8,1267.2 1252.1,1372.2 1246.7,1430.1 1253.5,1548.5 1286.3,1720.5 1300.0,1824.0 1136.0,1826.4 652.9,1838.7 334.6,1854.2 340.1,1023.9 342.0,730.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[342.0,730.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.404352,36.581404]}},{"type":"Feature","properties":{"resourceCoords":[1300.0,1824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.4010656,36.5809808]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0024","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"794.1,1728.9 567.8,1550.3 422.5,1439.1 218.4,1281.9 613.1,189.1 681.5,188.5 1498.0,181.1 1502.5,243.8 1494.5,428.9 1490.6,476.3 1461.1,598.2 1422.5,745.0 1384.9,860.7 1289.4,1065.7 1173.5,1290.1 1143.7,1383.6 1041.8,1562.4 884.0,1791.9 794.1,1728.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1513.0,594.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.40344924121779,36.57929957502914]}},{"type":"Feature","properties":{"resourceCoords":[362.0,194.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.40440192461648,36.58144520218387]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p25","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.58"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0025","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"257.4,1912.0 112.5,584.6 127.9,435.7 171.3,83.6 235.2,92.1 517.0,113.5 725.7,111.8 822.9,90.5 1078.7,78.0 1307.2,57.4 1427.7,31.7 1450.3,25.5 458.7,1849.3 244.4,1693.2 262.9,1912.0 257.4,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0025/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.40710552781367,36.57891702290167]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.4034457520867,36.57936408571655]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.40279013497202,36.57585386888935]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.406449910699,36.57540680607447]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p26","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0026","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1118.7,1635.2 1139.8,1530.9 1295.2,1483.8 1383.0,1419.4 1493.6,1426.9 1521.0,1383.8 1612.0,1400.7 1544.5,1287.7 1561.5,1277.5 1503.2,1171.2 1438.9,1061.2 1353.7,908.5 1347.8,911.9 860.1,137.2 784.6,172.2 762.3,181.4 700.5,196.5 636.7,210.8 148.6,1015.0 134.2,1121.5 120.4,1263.5 117.5,1288.5 104.6,1360.1 109.9,1383.7 83.2,1760.3 1.0,1772.2 1.0,1782.0 1118.7,1635.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[974.0,1607.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.4010197837183,36.57447917634536]}},{"type":"Feature","properties":{"resourceCoords":[1563.0,1277.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39867281166647,36.5761007196055]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p27","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0027","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"83.8,1849.5 84.1,1817.6 87.0,1658.5 96.9,1417.5 101.2,1335.8 104.5,1231.1 104.4,1167.0 98.0,1022.2 83.7,783.7 73.5,580.5 52.6,259.3 44.9,80.8 209.9,84.5 317.9,85.5 454.6,82.4 518.1,82.8 582.4,78.3 808.0,47.7 866.6,37.2 1122.1,37.5 1122.5,39.7 1246.8,104.4 1242.3,121.5 1240.6,124.2 1451.0,115.4 1424.5,216.7 1386.4,369.3 1378.2,389.4 1612.0,536.0 1612.0,586.2 1612.0,642.5 1571.1,717.0 1352.3,1115.2 1271.1,1428.0 1469.8,1589.0 1463.6,1603.3 1612.0,1804.3 1612.0,1812.7 1612.0,1829.3 1552.7,1893.8 1421.1,1891.0 1421.4,1871.2 1300.3,1864.2 1173.0,1860.3 998.3,1851.4 998.1,1858.2 82.5,1860.3 83.8,1849.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0027/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[586.0,1356.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39960270239038,36.579634764405704]}},{"type":"Feature","properties":{"resourceCoords":[1648.0,564.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39361678936746,36.57880600685583]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0028__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p28 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"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":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0028__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0028","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1540.4,150.6 1350.0,83.4 1360.7,69.9 1385.8,20.0 1358.7,16.4 1248.7,12.0 1150.2,13.2 990.5,17.9 831.2,15.3 705.6,16.4 444.2,19.8 446.4,1.0 338.7,1.0 245.4,13.5 236.1,84.7 196.2,244.7 159.6,398.0 151.6,418.3 387.4,562.7 388.6,669.5 348.4,744.5 197.9,1025.2 133.2,1146.0 55.1,1460.3 255.9,1619.6 249.9,1634.0 411.1,1847.7 432.5,1823.9 585.3,1880.7 806.0,1805.0 804.9,1773.9 1029.9,1531.8 1119.1,1484.3 1101.7,1362.8 1147.2,1184.5 1136.8,758.6 1221.2,651.6 1356.2,646.7 1507.7,596.9 1506.6,495.6 1479.5,465.4 1516.8,419.9 1518.8,191.2 1556.0,151.1 1540.4,150.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0028__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[879.0,867.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39312612290504,36.576889526209314]}},{"type":"Feature","properties":{"resourceCoords":[250.0,19.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39224349768985,36.58070262604516]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p29","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.53"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0029","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"777.4,187.3 736.4,248.2 769.8,266.1 811.5,207.7 837.5,173.8 1151.8,159.8 1425.4,123.3 1469.5,318.1 1493.6,436.5 1533.2,618.9 1550.3,617.3 1560.0,935.9 1532.5,942.4 1578.7,984.7 1549.0,1310.5 1465.9,1375.4 1397.4,1437.8 1386.5,1457.2 1351.6,1627.8 1324.0,1750.0 1288.0,1912.0 1286.4,1912.0 1274.0,1912.0 1287.4,1871.5 1209.4,1817.2 655.6,1819.3 507.2,1782.8 110.1,1809.3 114.6,1335.7 81.9,1094.7 45.8,1025.0 48.2,804.0 89.6,610.0 101.9,253.3 163.1,287.0 238.2,178.9 124.5,86.4 290.1,72.5 302.9,41.3 385.2,31.8 602.8,58.5 622.9,29.6 777.4,187.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1167.0,155.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39863811443774,36.591457641522716]}},{"type":"Feature","properties":{"resourceCoords":[1446.0,128.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39780379619631,36.59066973214195]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p3","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.76"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1058.2,1890.3 1073.2,1777.5 1193.0,1472.0 1228.3,1387.5 1388.8,982.5 1404.8,875.5 1232.3,1.0 1212.5,1.0 1182.7,103.7 1018.2,200.4 584.4,275.0 295.4,241.2 265.8,305.8 341.4,402.5 237.0,553.7 463.8,729.6 353.4,752.1 360.5,809.5 76.4,1397.7 556.3,1633.1 1058.2,1890.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1193.0,1472.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.391227,36.587118]}},{"type":"Feature","properties":{"resourceCoords":[274.0,991.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.392094,36.58893]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p31","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.42"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0031","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"77.6,1381.7 120.6,1038.9 78.5,1114.2 30.1,897.4 39.2,894.8 23.3,299.8 88.2,47.0 229.7,21.7 1124.1,45.6 1382.3,21.6 1388.0,34.7 1553.8,1.9 1554.1,100.4 1548.2,384.9 1544.2,785.7 1539.2,1154.5 1543.2,1188.5 1581.5,1289.1 1459.7,1287.1 1385.9,1290.3 1372.6,1290.2 1338.5,1290.0 1157.5,1602.3 1199.1,1680.2 1252.8,1780.5 659.1,1862.0 650.4,1912.0 640.0,1912.0 602.2,1912.0 24.2,1474.2 48.6,1432.4 49.8,1430.3 77.6,1381.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0031/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1541.0,221.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.40410723094342,36.5868318795293]}},{"type":"Feature","properties":{"resourceCoords":[1202.0,1681.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.40433852594722,36.58140329282295]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p32","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.83"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0032","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"230.6,1884.0 201.9,1863.5 112.2,1567.3 86.7,1478.3 56.3,1376.2 54.9,1342.3 87.0,978.4 120.5,582.9 147.3,302.3 154.3,205.0 279.7,190.2 453.6,166.0 475.8,169.8 558.1,214.0 647.7,271.3 967.5,190.0 992.1,131.9 1007.5,155.8 1307.1,39.6 1318.0,63.4 1578.3,526.8 1515.8,596.1 1183.3,1089.6 1141.7,1016.9 1039.4,1130.7 974.5,1207.1 826.0,1372.6 721.9,1496.8 664.4,1561.7 589.1,1628.2 521.4,1693.7 495.1,1715.7 448.9,1726.1 320.5,1712.2 267.6,1726.7 252.9,1791.3 230.6,1884.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0032/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[288.0,434.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.40337673133348,36.58694183627355]}},{"type":"Feature","properties":{"resourceCoords":[1311.0,21.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39938096366622,36.589391908815664]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p33","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.51"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0033","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"493.5,1855.8 44.5,1859.2 38.4,417.2 81.0,142.5 300.3,190.6 249.2,120.0 544.9,305.4 577.6,351.5 606.9,393.6 1254.2,50.7 1274.7,6.6 1342.8,54.0 1421.1,108.4 1543.4,195.7 1591.8,226.2 1572.7,253.4 1542.2,293.0 1451.5,404.1 1482.4,424.4 1312.2,680.9 1302.0,682.1 1373.7,980.3 1350.8,984.5 1383.0,1124.2 1291.3,1444.2 1161.5,1479.8 1187.2,1584.8 1191.4,1654.3 1189.0,1688.0 1172.0,1773.4 1096.7,1774.1 570.3,1857.3 570.7,1876.3 493.5,1855.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0033/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1292.0,685.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.408985,36.578714]}},{"type":"Feature","properties":{"resourceCoords":[1189.0,1688.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.412878,36.576895]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0034/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p34","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.15"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0034/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0034","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"42.1,208.3 70.8,400.0 39.1,454.1 81.4,573.4 45.2,633.4 62.8,743.0 41.9,819.1 71.3,901.0 41.1,947.2 35.1,1190.8 91.0,1830.1 671.0,1895.5 756.5,1872.8 772.8,1839.2 1105.8,1833.1 1144.9,1871.8 1350.6,1907.5 1349.8,1912.0 1359.4,1912.0 1551.4,1601.2 1532.0,1592.3 1612.0,1132.7 1612.0,448.1 1567.0,394.1 1559.5,413.2 1363.9,307.8 1379.3,267.6 1212.3,206.2 1046.8,147.7 936.6,113.2 746.0,58.0 603.8,21.6 585.6,104.4 512.5,104.1 1.0,177.9 1.0,196.8 42.1,208.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0034/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.41446510547866,36.57872893270594]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.41001449716228,36.573957928881285]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.41701088468042,36.56968902389463]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.4214614929968,36.57446002771929]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p35","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0035","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"996.0,1761.5 996.0,1750.2 1390.4,1723.0 1389.0,1746.4 1472.6,1740.5 1527.2,1364.0 1523.5,1339.8 1528.8,1319.7 1541.8,1268.8 1546.5,1244.0 1563.7,1144.2 1570.9,1102.2 1593.2,996.2 1532.0,1082.0 1434.6,990.1 1430.2,1101.5 1427.4,1101.2 1438.2,423.6 1455.3,349.5 1499.1,174.8 1452.2,160.3 1319.0,114.9 1310.9,150.2 1016.6,81.5 1012.0,72.5 762.2,240.6 750.5,221.0 633.0,298.5 307.3,323.7 230.1,216.4 142.3,276.1 79.8,303.8 48.0,313.0 65.8,460.6 83.7,660.9 91.6,777.6 97.3,955.4 100.7,1135.6 57.3,1136.0 29.9,1359.5 50.5,1359.6 1.0,1450.2 1.0,1673.2 996.0,1761.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0035/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1519.0,1361.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.405146,36.574656]}},{"type":"Feature","properties":{"resourceCoords":[769.0,1354.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.4084413,36.5739418]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0036__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p36 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"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":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0036__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0036","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1589.2,64.0 1491.2,117.6 1363.1,36.6 935.0,35.8 352.7,228.3 200.6,210.8 581.0,1336.2 690.2,1444.2 708.6,1512.0 712.6,1517.9 744.5,1564.4 776.0,1610.5 776.0,1761.5 796.9,1838.7 858.0,1889.2 1503.3,1888.7 1612.0,1804.5 1612.0,1677.7 1612.0,757.0 1610.8,756.8 1593.6,315.1 1601.8,319.2 1589.2,64.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0036__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1082.0,1149.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39483372436064,36.59604959191839]}},{"type":"Feature","properties":{"resourceCoords":[938.0,68.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39393842805406,36.597915221765305]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p37","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.83"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0037/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0037","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1489.2,1860.0 861.0,1862.4 316.7,1827.6 264.8,1738.7 100.5,1778.5 29.4,1625.5 9.5,1639.6 32.0,1117.9 31.4,1117.8 32.4,897.4 36.4,899.6 35.6,772.3 87.7,746.7 109.5,510.8 675.1,327.1 669.6,317.0 859.4,233.7 849.6,290.9 1010.7,230.2 1025.7,227.0 1044.8,226.4 1108.9,236.1 1245.3,260.2 1351.6,280.4 1507.0,310.0 1474.0,679.3 1510.5,682.8 1506.6,1055.3 1507.0,1102.0 1511.5,1363.4 1515.6,1596.8 1515.0,1752.8 1543.4,1762.2 1498.9,1892.7 1489.2,1860.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0037/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1365.0,278.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38616511562938,36.59682312827156]}},{"type":"Feature","properties":{"resourceCoords":[1162.0,649.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38774953041221,36.595928087644225]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0039/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p39","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0039/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0039","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"690.5,1837.5 178.5,1823.2 184.1,1751.2 192.2,1658.2 270.6,919.1 198.7,905.2 334.2,177.9 405.5,198.7 786.6,306.1 821.6,228.6 1612.0,152.2 1612.0,216.2 1544.3,388.3 1444.0,626.5 1446.6,715.5 1272.0,1514.5 1293.2,1550.5 1134.4,1795.2 690.5,1837.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0039/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1663.0,125.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38275018738744,36.5957114843823]}},{"type":"Feature","properties":{"resourceCoords":[1272.0,1509.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38471438679977,36.593580785237776]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1088.0,1846.0 1548.2,1841.0 1518.5,1263.6 1493.0,660.5 1527.8,660.7 1469.0,1.0 1413.9,1.0 1385.6,99.9 1045.1,129.4 722.5,66.7 566.4,132.0 153.6,155.6 142.0,193.1 309.2,1127.1 290.9,1235.6 120.5,1644.6 83.0,1729.9 196.8,1794.4 276.4,1818.1 423.8,1841.3 845.1,1848.5 1088.0,1846.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[284.0,1243.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39015362777522,36.587561456097944]}},{"type":"Feature","properties":{"resourceCoords":[1514.0,1243.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38800546939311,36.58609623278826]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p40","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.69"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0040","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1430.4,1803.5 1454.0,1866.0 1321.0,1892.4 73.9,1870.5 19.4,1590.6 134.5,1336.1 79.2,1311.5 110.5,997.1 147.7,525.7 183.8,70.7 703.5,85.8 1154.3,43.2 1143.1,60.5 1279.1,220.4 1309.0,198.2 1313.6,195.3 1338.1,180.1 1344.7,1536.4 1430.4,1549.7 1509.7,1586.9 1603.9,1710.1 1430.4,1803.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0040/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[161.0,501.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38770913541086,36.59303637553494]}},{"type":"Feature","properties":{"resourceCoords":[101.0,968.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38820884562567,36.592281632700825]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p41","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0041","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"154.7,589.2 29.1,851.9 56.9,857.1 64.5,1330.5 30.7,1527.8 26.9,1857.8 92.0,1896.0 253.6,1885.0 253.8,1890.0 432.6,1883.0 433.1,1873.3 770.8,1855.5 770.9,1852.5 1042.8,1862.8 1043.5,1868.8 1301.0,1887.5 1300.6,1884.1 1560.2,1905.6 1561.0,1912.0 1596.0,1912.0 1596.0,1879.0 1612.0,1878.0 1612.0,575.9 1581.0,295.4 1554.7,316.1 1325.5,259.0 1269.4,170.2 1269.5,217.4 1020.8,138.1 1077.3,128.8 959.5,22.1 959.6,23.0 394.8,28.5 203.4,57.2 90.2,36.3 37.6,90.1 16.8,203.3 1.0,205.0 1.0,209.1 77.4,360.4 88.5,354.7 177.1,568.5 154.7,589.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0041/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[179.0,1361.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39133178932207,36.60606875584695]}},{"type":"Feature","properties":{"resourceCoords":[481.0,497.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39003804007696,36.60927148984891]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p42","metadata":[{"label":"streets","value":"20"},{"label":"intersections","value":"39"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0042","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"622.8,1845.7 621.0,1834.2 828.7,1821.4 799.7,1871.9 972.5,1870.4 987.8,1872.7 996.1,1875.5 1192.4,1711.6 1243.8,1738.8 1445.8,1369.4 1393.4,1338.9 1515.2,1128.0 1541.7,849.8 1527.7,846.0 1533.8,701.5 1542.8,703.5 1612.0,506.9 1612.0,1.0 1399.9,1.0 1385.2,15.0 1346.7,19.9 1344.8,12.7 1083.5,24.5 1084.3,27.9 825.4,42.1 823.9,36.3 551.8,60.7 552.0,63.7 217.9,124.7 218.7,134.4 41.5,164.2 51.6,228.4 12.2,943.5 37.7,1185.2 24.7,1693.9 48.2,1776.6 26.1,1823.0 622.8,1845.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[606.0,1048.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.388795,36.600693]}},{"type":"Feature","properties":{"resourceCoords":[245.0,483.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.390163,36.60289]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0043__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p43 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.07"},{"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":"3686.0"},{"label":"split_canvas_h","value":"2648.0"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0043__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0043","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"828.0,71.8 706.2,8.4 391.2,11.0 306.4,29.1 288.1,69.3 263.4,42.5 147.7,63.3 144.3,12.7 29.0,19.2 29.1,622.0 85.4,603.4 123.1,639.2 485.9,661.0 738.3,509.8 770.8,504.5 818.5,259.2 805.1,257.7 828.0,71.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0043__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[618.7,503.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.391957,36.608691]}},{"type":"Feature","properties":{"resourceCoords":[618.7,246.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39258,36.60941]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0043__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p43 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.65"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3686.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2766.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0043__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0043","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1378.5,1545.8 1358.6,1573.1 1313.6,1546.2 1237.9,1506.3 1135.5,1462.7 1231.0,1746.2 1266.2,1703.2 1390.0,1791.1 1546.1,1904.5 1560.3,1883.8 1535.0,1847.9 1559.1,1685.0 1612.0,1635.8 1612.0,1532.0 1610.3,652.5 1612.0,651.8 1612.0,557.3 1541.3,285.0 1518.6,308.9 1104.1,230.9 921.5,431.3 921.5,518.7 921.5,662.0 921.5,970.1 1094.5,1379.2 1378.5,1545.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0043__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[921.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.38637596834141,36.610135398948266]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.38432767504167,36.61211092775424]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.37757190176058,36.60753353481196]}},{"type":"Feature","properties":{"resourceCoords":[921.5,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.37962019506031,36.60555800600598]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0043__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p43 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"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":"2648.0"},{"label":"split_canvas_w","value":"4594.8"},{"label":"split_canvas_h","value":"5004.0"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0043__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0043","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"983.8,1894.0 996.8,1868.5 1014.5,1883.5 1062.1,1751.3 1060.8,1726.0 1098.8,1614.3 1086.3,1602.3 1119.5,1500.8 1116.5,1481.7 1129.8,1476.3 973.5,1095.8 909.5,996.2 874.1,708.2 604.3,676.6 36.4,705.0 12.7,1606.2 91.1,1703.7 46.0,1703.9 229.4,1796.3 235.2,1759.6 267.8,1835.5 438.8,1908.2 753.8,1731.8 755.6,1705.5 936.1,1836.2 983.8,1894.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0043__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[210.9,1703.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.386658,36.610779]}},{"type":"Feature","properties":{"resourceCoords":[755.8,1703.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.383535,36.611236]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p44","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0044","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"101.0,145.0 1.0,130.9 1.0,1443.0 281.1,1706.5 281.0,1701.5 548.9,1734.9 549.3,1742.4 687.2,1737.3 727.5,1746.2 759.1,1762.4 801.4,1793.0 835.5,1828.5 858.2,1860.2 1220.5,1901.2 1234.6,1870.5 1232.6,1858.0 1570.7,1837.1 1575.8,852.4 1544.8,382.1 1579.3,250.4 1545.8,111.0 1498.4,70.3 848.9,70.7 830.9,31.5 652.6,108.3 513.0,170.1 532.0,223.1 238.0,158.8 328.4,92.4 401.8,47.4 448.1,22.3 439.1,1.0 416.3,1.0 144.6,151.2 101.0,145.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0044/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[548.0,700.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.37956680701015,36.60509928518515]}},{"type":"Feature","properties":{"resourceCoords":[548.0,1295.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.379999478959,36.60293742079456]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0045/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p45","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"23"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0045/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0045","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"757.8,1798.2 1155.9,1696.8 1159.5,1680.7 1221.1,1443.2 1266.2,1251.3 1301.6,1121.4 1396.0,738.0 1459.1,484.1 1506.7,297.0 1540.8,319.5 1563.1,12.4 1209.1,100.2 1176.9,78.4 1132.5,57.0 1082.2,43.0 1047.0,38.9 1006.1,44.5 878.6,97.3 875.6,90.4 612.8,152.4 614.7,157.0 244.7,1.0 1.0,1.0 1.0,132.2 55.7,258.0 70.7,467.9 61.6,469.7 113.4,604.0 127.7,601.9 213.9,866.4 186.3,1107.2 246.3,1114.3 208.3,1531.7 150.7,1527.2 36.5,1754.6 46.8,1753.7 111.3,1759.6 248.8,1775.8 356.0,1789.8 549.5,1815.2 746.4,1839.2 757.8,1798.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0045/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[393.0,1550.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.385536,36.597538]}},{"type":"Feature","properties":{"resourceCoords":[1396.0,738.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.379701,36.598321]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0046__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p46 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.94"},{"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":"3120.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0046__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0046","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"410.0,1767.0 523.9,1767.3 570.0,1767.4 750.4,1633.8 750.3,1575.2 750.2,1550.7 746.3,1429.7 770.0,1429.2 779.0,1397.4 777.2,1363.7 748.1,491.6 681.6,491.2 628.0,491.2 554.5,491.2 554.5,490.3 553.6,490.3 468.8,195.5 480.9,107.6 289.6,77.8 130.9,103.1 48.2,17.0 108.6,353.4 70.0,340.1 70.2,533.2 72.0,795.0 75.5,1190.0 73.3,1324.8 77.2,1522.0 76.7,1684.5 343.9,1766.8 410.0,1767.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0046__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[72.0,795.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.379701,36.598321]}},{"type":"Feature","properties":{"resourceCoords":[410.0,1767.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.381669,36.594881]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0047/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p47","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"24"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0047/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0047","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"200.7,1170.7 187.7,1183.9 108.6,1115.9 173.0,972.2 159.6,955.9 184.8,544.1 176.6,499.9 208.1,373.4 228.5,282.3 223.6,250.5 236.4,247.2 240.0,231.0 260.9,150.2 501.2,296.8 565.7,313.4 721.7,353.5 930.9,267.9 951.4,186.8 977.6,67.7 1000.9,73.1 1031.1,20.9 1047.4,44.5 1321.2,63.2 1444.0,40.2 1475.5,73.3 1517.7,57.9 1557.0,82.2 1597.3,587.5 1612.0,598.4 1612.0,601.0 1559.5,1104.0 1579.0,1288.2 1595.3,1346.8 1612.0,1354.1 1612.0,1639.2 1594.3,1674.3 1580.2,1813.9 1553.5,1871.5 1106.1,1853.7 472.7,1881.9 461.6,1890.3 405.9,1837.0 364.1,1824.8 321.1,1824.9 213.6,1159.6 200.7,1170.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0047/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1204.0,794.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.380222,36.592203]}},{"type":"Feature","properties":{"resourceCoords":[240.0,231.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.382773,36.59573]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0048/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p48","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.37"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0048/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0048","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"530.5,39.1 533.9,47.8 509.6,43.2 408.6,63.0 77.0,56.2 31.0,135.4 44.0,589.6 16.4,901.2 68.2,1301.2 64.1,1477.1 38.5,1512.1 79.0,1627.7 82.2,1832.7 282.7,1836.4 505.4,1885.0 804.2,1870.8 817.0,1839.9 939.2,1832.7 1235.5,1840.8 1260.1,1863.3 1301.5,1840.6 1329.7,1864.1 1407.5,1836.4 1575.7,1837.3 1555.5,1323.8 1560.5,1325.0 1557.9,1026.2 1550.3,1024.3 1556.3,598.3 1544.1,598.4 1552.4,309.8 1566.2,309.9 1544.6,1.0 1381.8,1.0 901.3,95.4 899.9,117.1 535.1,48.0 531.5,38.9 530.5,39.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0048/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.42008448600721,36.570070631391715]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.41309737358216,36.57169544940743]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.41071486223562,36.56499307499942]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.41770197466067,36.56336825698371]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0049/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p49","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.13"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0049/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0049","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"43.1,26.7 63.1,332.2 49.5,332.0 40.1,616.4 52.1,616.3 44.4,1036.1 51.9,1038.0 53.0,1332.5 48.2,1331.2 65.8,1837.3 182.4,1838.5 1174.5,1900.5 1485.2,1885.0 1545.3,1852.3 1527.4,1496.0 1540.0,1458.1 1574.5,1181.0 1595.7,1187.7 1586.6,836.1 1566.2,835.6 1548.5,588.5 1538.8,584.4 1529.3,149.6 1612.0,157.9 1612.0,153.7 490.4,35.0 490.6,13.8 490.7,1.0 18.1,1.0 1.0,4.3 1.0,26.5 43.1,26.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0049/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.41361763759379,36.57167653263148]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.40653618446166,36.57335083425309]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.40408109805702,36.56655800799049]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.41116255118915,36.564883706368875]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"134.9,1086.2 169.6,1086.2 107.9,426.9 53.2,427.2 118.0,196.8 460.9,192.0 726.9,108.7 1352.4,141.2 1508.6,52.4 1492.7,1701.4 1395.1,1700.8 1094.8,1698.8 581.3,1691.3 163.0,1688.0 134.9,1086.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[906.0,1100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38585452415099,36.585993665594394]}},{"type":"Feature","properties":{"resourceCoords":[128.0,1100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38721059678025,36.586926920605215]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p50","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.26"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0050","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"76.3,1857.5 112.1,1837.7 196.6,1881.2 463.7,1896.0 1565.9,1865.0 1593.7,1618.9 1575.2,1236.5 1598.4,681.1 1557.7,484.7 1551.7,248.2 1576.7,174.6 1539.7,60.0 1540.6,56.7 395.9,113.3 398.1,80.0 1.0,104.2 1.0,115.8 135.2,133.3 134.2,137.6 50.2,129.6 62.3,570.7 72.2,574.9 91.7,825.5 112.3,825.9 123.6,1182.7 102.0,1176.0 68.5,1457.4 56.0,1495.9 76.3,1857.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0050/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.40708992311403,36.57313656195423]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.40010023499471,36.574754308344936]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.39772802518539,36.56804965473507]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.4047177133047,36.56643190834436]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0053__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p53 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.20"},{"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":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0053__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0053","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1343.4,1912.0 1354.7,1912.0 1410.0,581.6 1410.5,518.7 1359.5,520.1 1577.4,325.6 1577.0,287.9 1586.8,287.8 1561.2,100.0 1523.2,67.9 1351.2,37.0 1179.6,82.1 103.7,75.5 94.0,114.9 33.6,407.4 27.6,1115.4 89.9,1328.0 79.8,1447.0 219.3,1469.9 206.0,1493.2 252.2,1512.0 252.9,1512.1 253.0,1512.3 299.8,1531.4 373.4,1667.1 393.2,1835.2 678.6,1886.4 1198.5,1870.0 1247.8,1840.4 1337.9,1862.5 1343.4,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0053__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.43731829357324,36.56733385278816]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.43022838048196,36.56874401437148]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.4281607164682,36.561942728542455]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.43525062955946,36.56053256695913]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0054/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p54","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.46"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0054/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0054","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"121.8,228.8 120.5,291.7 47.8,1622.0 36.6,1622.8 51.7,1775.5 37.9,1813.9 86.2,1849.3 268.1,1843.2 608.0,1893.4 1563.3,1848.3 1591.0,309.1 1546.3,156.6 1563.0,92.3 1535.3,66.1 1452.2,105.5 1112.4,40.0 1033.0,65.1 386.9,57.2 305.1,32.2 301.3,1.0 291.4,1.0 291.3,37.7 70.8,229.5 121.8,228.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0054/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.43135137047307,36.56742101856158]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.42428867351671,36.56890508522113]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.42211269022523,36.56212976806423]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.42917538718159,36.56064570140468]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1465.0,1621.0 1043.8,1664.7 1053.7,1781.2 599.1,1742.5 521.2,1742.8 461.2,1730.8 153.2,1704.6 168.7,1419.6 183.4,1293.1 197.2,908.2 210.3,637.1 223.2,523.9 337.5,216.0 451.7,275.4 530.9,295.9 676.6,313.5 1091.2,305.7 1330.1,294.8 1331.3,393.6 1392.1,944.2 1415.2,1170.2 1465.0,1621.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[176.0,604.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39211395639983,36.586785886422675]}},{"type":"Feature","properties":{"resourceCoords":[1461.0,1634.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.39152140708909,36.5837438199627]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1276.0,1806.8 744.6,1844.8 747.0,1875.8 305.6,1889.2 270.7,1484.2 252.9,1256.1 205.0,699.8 206.2,600.2 662.4,589.9 626.3,17.6 1041.9,17.8 1552.2,21.5 1560.6,568.6 1404.4,571.7 1302.6,1179.3 1318.9,1179.7 1311.3,1330.6 1285.0,1687.0 1276.0,1806.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1313.0,1183.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38859831113592,36.583594500852]}},{"type":"Feature","properties":{"resourceCoords":[695.0,1183.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38967557205622,36.584347037692325]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p8","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"913.4,1822.2 128.7,1838.6 136.6,1715.2 159.6,1356.1 165.7,1204.1 149.3,1203.9 245.7,591.3 402.9,586.6 389.0,36.0 689.3,32.7 960.8,29.9 1116.0,32.1 1113.7,578.2 1367.1,578.2 1369.9,723.8 1367.5,1212.7 1367.4,1887.4 1070.8,1838.7 938.6,1806.5 898.0,1790.3 913.4,1822.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[865.0,1211.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.387393,36.582727]}},{"type":"Feature","properties":{"resourceCoords":[389.0,36.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.38642,36.584929]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1920 | sanborn09010_008 p9","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.36"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:20:19Z","modified":"2026-10-24T15:20:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1561.0,747.6 1539.0,1721.4 1339.3,1723.6 823.7,1726.5 477.0,1725.0 321.7,1724.4 147.8,1728.0 118.0,78.3 161.8,51.7 345.0,122.9 872.6,40.0 1328.2,52.0 1556.9,249.8 1576.1,598.0 1505.1,672.3 1573.2,747.5 1561.0,747.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101920:09010_1920-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.3833189006769,36.58698992118357]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.3805767032837,36.5849942188891]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.38352441795156,36.58238283793034]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.38626661534477,36.58437854022481]}},{"type":"Feature","properties":{"resourceCoords":[477.0,1725.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.385166,36.584045]}}]}}]}