{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn09421_007.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Martinsburg, West-Virginia | 1922 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"26"},{"label":"placed","value":"20"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef-snap 12, georef 8"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"2 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p10__2 (tier 1, 39.46069,-77.97129 +/-100m); p18__2 (tier 1, 39.44602,-77.97349 +/-100m); p18__3 (tier 2, 39.44911,-77.97200 +/-233m); p18__4 (tier 1, 39.44760,-77.97147 +/-112m); p18__5 (tier 1, 39.44548,-77.97273 +/-100m); p22 (tier 4, 39.45783,-77.96689 +/-1395m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0010__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p10 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.83"},{"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":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0010__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"312.0,1689.3 371.5,1699.8 464.1,1698.6 622.1,1683.3 1047.7,1664.5 1395.5,1653.0 1387.3,1329.7 1386.7,1303.7 1380.0,977.5 1378.4,926.6 1380.3,772.9 1392.0,503.4 1422.6,48.3 1362.2,32.8 820.6,35.2 706.8,86.3 620.9,395.9 94.6,446.9 23.5,973.5 43.8,1135.2 107.4,1191.6 68.1,1333.8 108.5,1535.0 1.0,1541.9 1.0,1612.2 312.0,1689.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0010__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[744.0,449.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.96829468277566,39.463523767841444]}},{"type":"Feature","properties":{"resourceCoords":[1409.0,1685.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.96766319318988,39.46097165794642]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.56"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1406.7,1787.0 1118.7,1786.4 811.7,1793.1 598.7,1794.7 511.9,1796.5 488.3,1796.8 221.9,1805.0 226.3,1380.3 231.7,965.3 244.8,715.6 272.5,397.3 314.0,1.2 510.7,59.0 791.9,22.8 800.1,8.1 1570.6,421.9 1576.6,1783.8 1421.1,1786.6 1406.7,1787.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[814.0,1787.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.96644193905198,39.460734198539605]}},{"type":"Feature","properties":{"resourceCoords":[229.0,1787.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.96767058481039,39.46099672843214]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.75"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"988.1,1811.1 435.8,1811.5 160.6,1810.3 62.8,1809.9 87.0,423.9 943.7,364.0 947.0,450.8 1545.2,537.0 1505.6,1465.9 1531.0,1510.9 1544.0,1672.5 1543.9,1784.4 1535.1,1813.8 988.1,1811.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1528.0,1800.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.96154519171611,39.459771378546236]}},{"type":"Feature","properties":{"resourceCoords":[969.0,1800.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.96279948897079,39.460016689291926]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1245.3,1804.5 1136.7,1803.4 1138.1,1818.9 845.2,1816.4 838.0,1774.9 430.4,1859.5 436.3,1909.5 65.6,1761.5 84.9,1716.2 46.4,1483.2 79.4,1075.4 18.9,788.1 62.4,190.8 95.4,67.0 475.8,12.5 826.4,21.2 1052.7,64.2 1100.7,41.0 1437.8,183.4 1420.5,303.6 1409.3,351.2 1395.7,390.1 1341.8,525.4 1347.0,700.3 1343.1,871.1 1330.3,1240.0 1265.8,1238.8 1326.0,1455.9 1245.2,1801.8 1245.3,1804.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1235.0,1440.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.95968394139288,39.46311420004451]}},{"type":"Feature","properties":{"resourceCoords":[776.0,436.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.95992643198906,39.467179538021895]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1516.6,1836.8 1524.0,1874.5 1562.5,1849.2 1547.2,1686.1 1590.8,1421.9 1611.7,598.1 1611.3,412.6 1599.7,365.1 1572.7,368.2 1596.2,318.1 1540.9,58.6 1266.3,67.7 1191.9,34.1 1130.5,51.5 1103.9,26.3 934.2,16.1 867.4,39.8 842.2,17.9 383.1,39.2 317.7,17.9 146.8,72.7 105.0,49.8 67.2,65.5 46.4,433.2 1.0,455.7 1.0,461.5 339.4,600.1 323.1,722.7 312.3,771.3 298.9,811.0 245.4,949.4 252.8,1127.4 250.7,1301.4 241.8,1677.2 176.0,1676.6 239.7,1897.0 239.4,1898.2 647.1,1679.8 647.1,1675.0 864.1,1677.0 965.8,1675.8 1048.8,1670.9 1516.6,1836.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[673.0,682.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.95524740655019,39.466395124724976]}},{"type":"Feature","properties":{"resourceCoords":[232.0,1668.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.95893074028695,39.46371102163638]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"41.7,1478.2 48.7,1349.0 56.8,1128.0 61.9,1113.7 64.5,1058.5 62.0,978.6 50.5,955.8 93.5,482.9 202.0,504.1 202.4,501.4 346.9,171.1 788.9,35.3 789.9,30.5 1002.4,74.2 1102.4,92.6 1184.8,103.8 1612.0,356.6 1612.0,395.0 1580.9,407.7 1572.1,964.5 1612.0,1104.7 1612.0,1153.5 1612.0,1483.0 1569.4,1850.9 1578.2,1905.6 1384.8,1898.5 1152.5,1888.0 1155.8,1852.5 1089.5,1855.0 977.2,1853.0 782.8,1854.7 660.7,1853.9 660.5,1865.7 344.1,1851.3 343.4,1843.6 291.0,1843.6 30.4,1835.8 41.7,1478.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1474.0,1474.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.95534654405374,39.45749706628944]}},{"type":"Feature","properties":{"resourceCoords":[346.0,1846.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9608771482427,39.456988619842946]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p16","metadata":[{"label":"streets","value":"18"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.63"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"177.6,1797.5 224.9,1912.0 233.7,1912.0 233.8,1886.2 1431.0,1899.0 1611.2,1877.8 1611.8,665.4 1599.5,650.1 1581.0,503.3 1611.5,230.9 1553.3,11.9 1364.4,23.7 1137.3,35.8 1137.1,1.0 1136.2,1.0 1072.8,9.6 963.4,18.6 774.2,38.9 655.4,49.9 656.4,61.4 347.1,77.8 345.6,70.4 294.6,75.4 40.2,92.9 62.0,437.0 82.0,781.5 73.5,781.5 45.0,783.5 81.0,1124.3 103.4,1123.3 119.8,1326.7 126.1,1423.3 125.0,1480.7 136.6,1596.9 137.1,1674.8 150.3,1721.4 178.3,1769.1 177.6,1797.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1202.0,1442.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9588966,39.4512126]}},{"type":"Feature","properties":{"resourceCoords":[62.0,437.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9627038,39.4560104]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"120.8,1685.3 126.2,1559.1 127.3,1489.8 101.1,1489.3 103.2,1135.0 132.2,1135.5 139.2,763.9 154.1,64.1 430.9,64.5 719.4,65.8 986.1,66.3 1396.2,67.9 1498.6,68.2 1510.6,423.8 1533.9,424.4 1535.9,636.3 1535.2,736.8 1529.9,796.1 1533.2,917.3 1528.0,998.0 1538.2,1047.3 1563.7,1098.7 1560.8,1128.1 1608.8,1272.6 1564.2,1872.0 1532.4,1852.1 1471.2,1889.6 1086.0,1902.4 731.1,1844.9 731.2,1851.9 117.7,1855.6 117.9,1845.6 120.8,1685.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[698.0,425.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9672439625385,39.45420601882136]}},{"type":"Feature","properties":{"resourceCoords":[1538.0,1132.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.96419956697292,39.45107486587391]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0018__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p18 [1]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.82"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4784.8"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0018__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"187.5,1194.4 188.1,1194.7 188.5,1194.7 188.5,1194.4 1578.5,1166.9 1585.4,860.1 1557.7,751.4 1582.0,679.5 1584.5,203.9 1556.0,122.4 1601.8,119.8 1249.7,70.8 1250.0,77.7 643.3,94.7 643.3,84.8 507.7,85.2 381.9,83.3 86.5,84.7 88.5,418.1 89.5,769.3 90.4,799.1 90.5,1121.1 91.1,1141.3 163.1,1194.9 180.1,1194.7 180.1,1194.6 187.5,1194.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0018__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[648.0,784.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9721158,39.4472885]}},{"type":"Feature","properties":{"resourceCoords":[90.0,784.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9746408,39.4477846]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p19","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"25"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1612.0,1408.6 1604.5,1421.6 1601.6,1796.9 1582.6,1874.5 1337.0,1889.7 1255.8,1856.2 1173.6,1880.6 1102.3,1856.2 805.2,1895.7 53.1,1879.8 12.4,777.5 63.5,74.2 578.2,15.0 578.2,12.7 733.3,105.3 752.7,76.9 960.9,210.7 959.9,265.1 1237.5,281.4 1237.5,247.2 1516.8,286.4 1517.0,304.2 1517.3,635.9 1516.6,985.2 1517.3,1014.9 1515.8,1335.2 1516.4,1355.3 1588.0,1409.1 1604.7,1409.1 1604.7,1408.7 1612.0,1408.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[959.0,1000.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9771819,39.4482736]}},{"type":"Feature","properties":{"resourceCoords":[1517.0,1000.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9746408,39.4477846]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p2","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"780.7,1656.4 235.0,1657.0 235.8,1359.5 230.3,938.7 230.5,231.2 777.0,234.0 1318.2,239.8 1320.7,683.0 1317.5,942.4 1325.1,1659.7 780.7,1656.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[235.0,1657.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9647924,39.4577287]}},{"type":"Feature","properties":{"resourceCoords":[777.0,234.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9627629,39.4599891]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0020","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"36.9,748.5 27.6,741.6 76.3,749.7 92.0,649.4 199.2,668.2 378.0,379.4 559.1,98.0 879.7,222.9 874.2,219.4 863.9,212.8 1085.0,122.3 1104.1,87.3 1508.2,75.8 1512.0,755.8 1514.8,1116.9 1486.7,1117.2 1493.9,1461.2 1519.3,1461.1 1520.0,1528.4 1518.0,1651.1 1519.4,1806.8 1386.2,1808.0 1262.7,1806.7 972.5,1809.4 972.3,1791.8 696.2,1755.8 696.5,1789.6 422.2,1776.1 422.7,1722.3 215.9,1592.3 197.0,1620.5 43.0,1530.6 36.9,748.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[686.0,1808.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.975168199818,39.4505005898396]}},{"type":"Feature","properties":{"resourceCoords":[1117.0,53.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.97108903792204,39.45633845282617]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0021","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1231.9,84.7 1365.0,429.2 1378.3,427.9 1443.8,769.8 1506.1,768.2 1512.5,1068.3 1507.2,1116.7 1351.0,1491.0 1220.3,1809.9 1109.9,1809.0 1111.0,1912.0 1086.3,1912.0 1060.9,1912.0 960.4,1860.7 932.4,1889.5 862.4,1888.0 810.4,1854.0 767.0,1893.8 41.2,1886.8 63.7,1717.5 31.3,1544.2 58.5,1495.3 25.9,1477.2 19.8,1390.1 47.9,1095.9 9.4,763.8 27.7,80.2 64.8,35.1 183.3,72.0 765.2,49.4 921.2,69.7 1085.0,32.7 1156.8,109.7 1231.9,84.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1309.0,437.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.97304770542264,39.45940504730859]}},{"type":"Feature","properties":{"resourceCoords":[827.0,1463.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.97706831576683,39.45672483814579]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p3","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1054.5,1685.3 246.0,1693.0 245.6,1011.6 241.8,942.3 242.7,685.4 239.6,266.9 784.6,267.1 1328.2,271.2 1332.0,977.0 1332.2,1683.5 1314.8,1682.5 1054.5,1685.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1332.0,977.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9627038,39.4560104]}},{"type":"Feature","properties":{"resourceCoords":[246.0,1693.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9655742,39.455221]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p4","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"824.5,1715.2 251.8,1724.4 250.5,997.5 248.0,283.0 507.4,278.3 797.1,276.5 1337.2,269.1 1343.4,690.5 1344.3,949.3 1348.6,1019.0 1354.0,1705.2 824.5,1715.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1346.0,988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9651829,39.4564732]}},{"type":"Feature","properties":{"resourceCoords":[248.0,283.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9672567,39.4581846]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p5","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"964.8,1666.7 140.0,1675.0 130.5,1691.6 100.9,920.1 107.5,920.1 102.9,561.3 106.7,561.4 128.0,212.1 609.4,215.2 984.3,221.7 1527.8,223.8 1521.5,937.2 1513.7,1662.9 964.8,1666.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[974.0,934.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9688973,39.4571746]}},{"type":"Feature","properties":{"resourceCoords":[140.0,1675.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9711893,39.4562283]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"485.3,1421.9 512.0,1328.7 600.4,737.2 477.7,719.5 464.0,26.2 880.5,58.5 1490.0,71.7 1473.9,417.8 1470.1,417.8 1479.8,773.1 1473.3,773.2 1513.7,1536.9 1483.8,1590.9 1036.2,1771.8 1057.0,1785.2 1068.3,1792.5 421.2,1537.4 485.3,1421.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[479.0,1420.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.97350992525604,39.456873440902754]}},{"type":"Feature","properties":{"resourceCoords":[1484.0,54.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.97042511419325,39.458825918267074]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.82"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1474.0,1719.4 1486.7,1337.6 1495.2,971.4 1502.3,198.8 1338.3,206.8 1242.7,203.4 1181.7,189.7 863.2,94.3 866.7,22.0 125.7,34.2 108.0,85.6 30.2,145.1 21.6,794.0 1.0,829.7 1.0,832.9 95.0,973.8 252.9,948.4 405.9,1679.0 855.7,1710.6 1474.0,1719.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1444.0,238.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.96961576205106,39.46137047528017]}},{"type":"Feature","properties":{"resourceCoords":[294.0,1699.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.97305583069239,39.45936465602352]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"163.5,1334.3 175.9,971.9 191.1,207.2 627.2,213.4 983.2,222.5 981.8,259.9 1229.7,258.2 1332.5,258.6 1530.5,261.8 1536.1,975.8 1533.2,1349.2 1539.4,1708.2 998.8,1712.2 625.8,1709.8 147.0,1712.0 163.5,1334.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[991.0,1340.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.96829205157454,39.459072341006866]}},{"type":"Feature","properties":{"resourceCoords":[991.0,1707.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.96850175409898,39.45842868804599]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Martinsburg, West-Virginia | 1922 | sanborn09421_007 p9","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T23:34:55Z","modified":"2026-10-19T23:34:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"833.3,1698.8 542.2,1701.8 281.6,1707.7 273.2,1344.5 273.9,966.6 264.1,244.3 553.2,243.1 824.2,248.4 1082.0,248.3 1357.1,248.3 1364.0,963.2 1373.8,1388.4 1376.0,1689.0 833.3,1698.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894mm:g3894mm_g094211922:09421_1922-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[824.0,965.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9656116,39.4592281]}},{"type":"Feature","properties":{"resourceCoords":[1376.0,1689.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.9647924,39.4577287]}}]}}]}