{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn09058_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Portsmouth, Virginia | 1893 | 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":"25"},{"label":"placed","value":"16"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef 10, georef-snap 5, georef-street 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 14 panels"},{"label":"unplaced pages","value":"p14__2 (tier 1, 36.83570,-76.31377 +/-100m); p15__1 (tier 1, 36.83544,-76.30594 +/-158m); p15__2 (tier 1, 36.82868,-76.30739 +/-100m); p15__4 (tier 1, 36.83523,-76.30755 +/-198m); p16__1 (tier 1, 36.82919,-76.30159 +/-270m); p16__2 (tier 1, 36.82940,-76.30311 +/-122m); p2 (tier 2, 36.82962,-76.29676 +/-107m); p3__1 (tier 1, 36.83289,-76.29799 +/-100m); p9__2 (tier 1, 36.83918,-76.30443 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p10","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1532.0,1891.0 1532.0,42.5 1531.9,1.0 1464.0,1.0 1448.7,1.2 1130.0,10.4 288.1,16.3 288.1,1035.2 292.8,1282.7 307.4,1328.3 308.2,1615.4 288.9,1768.7 283.4,1895.8 283.1,1904.3 1082.9,1888.8 1083.0,1887.2 1159.7,1887.8 1532.0,1891.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[685.0,643.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.3039078,36.8360673]}},{"type":"Feature","properties":{"resourceCoords":[1532.0,643.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.3038504,36.8344629]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0011__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p11 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.88"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3842.8"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3809.2"}],"created":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0011__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"317.4,1419.2 324.0,1835.0 351.4,1853.0 1515.4,1840.2 1518.2,1912.0 1541.5,1912.0 1531.4,1410.1 1488.2,1410.6 1483.5,1154.3 1441.7,1002.2 1264.1,1003.0 263.1,1028.0 306.8,1419.2 317.4,1419.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0011__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[817.0,1418.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.3127952,36.8334831]}},{"type":"Feature","properties":{"resourceCoords":[817.0,1827.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.3127754,36.8327021]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0011__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p11 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3842.8"}],"created":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0011__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1514.2,904.4 1486.3,886.2 1478.4,463.8 1467.5,463.9 1422.0,66.6 242.2,99.7 76.4,563.0 177.8,923.2 1514.2,904.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0011__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[907.0,484.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.31532864216719,36.83340406108856]}},{"type":"Feature","properties":{"resourceCoords":[1472.0,890.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.31398469643776,36.8326588341495]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"92.4,1903.6 41.8,1309.0 74.7,374.9 68.9,324.7 70.1,87.3 138.6,86.5 138.0,37.8 269.2,37.8 529.7,37.6 715.9,32.8 1115.5,29.4 1529.6,27.8 1526.5,725.5 1599.2,1299.5 1540.3,1754.5 1580.8,1820.2 1493.2,1874.2 822.9,1889.3 822.9,1865.7 315.2,1868.4 315.1,1912.0 59.7,1912.0 92.4,1903.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[325.0,692.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.30831429814444,36.833586175202925]}},{"type":"Feature","properties":{"resourceCoords":[325.0,84.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.30687952327403,36.83362651770778]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1419.5,1.0 965.9,1.0 627.3,4.5 234.8,8.7 234.9,52.4 238.3,1907.1 588.1,1904.2 848.7,1901.9 1035.1,1895.6 1434.9,1888.8 1423.0,1563.3 1423.0,1280.7 1420.6,648.8 1419.5,1.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1033.0,625.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.30372944565354,36.832959845724474]}},{"type":"Feature","properties":{"resourceCoords":[231.0,625.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.30378024398163,36.834473963065825]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0014__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p14 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.54"},{"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":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0014__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"559.0,1886.0 559.0,1884.0 1317.1,1835.7 1380.1,1618.4 1480.3,1578.9 1498.8,1431.0 1386.2,1413.5 1403.2,600.8 1036.5,568.7 990.4,454.2 983.0,16.1 264.0,17.1 139.0,41.3 138.3,662.7 139.0,1288.0 138.1,1567.7 149.1,1889.8 559.0,1886.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0014__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[139.0,1288.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.3052513,36.8321902]}},{"type":"Feature","properties":{"resourceCoords":[139.0,17.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.3022219,36.8322621]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0015__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p15 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3256.8"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"1406.0"}],"created":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0015__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1392.6,825.1 1017.5,814.6 940.2,814.2 134.1,814.2 131.5,863.5 117.4,862.9 94.3,995.1 172.8,1156.7 1486.7,1162.3 1538.9,1115.0 1543.2,876.7 1612.0,876.8 1612.0,848.8 1612.0,828.0 1392.6,825.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0015__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[535.0,879.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.30702761336696,36.83600124470611]}},{"type":"Feature","properties":{"resourceCoords":[1383.0,879.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.30693201524704,36.8344083191666]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p17","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.43"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1543.5,518.0 1583.4,520.1 1580.2,1088.7 1589.6,1811.5 1523.5,1875.1 1347.8,1883.5 104.5,1849.8 42.9,1228.7 90.0,538.4 51.1,325.8 125.8,280.6 147.2,126.0 290.3,173.6 536.0,24.3 855.5,79.5 1205.2,30.9 1525.5,102.1 1538.2,97.5 1543.5,518.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.3045515,36.8281149]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.301073,36.8293454]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.2992498,36.8260431]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.3027283,36.8248126]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p18","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.41"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1523.8,452.6 1565.3,984.2 1501.0,1040.9 1454.8,1300.0 1510.9,1799.2 1383.9,1874.4 266.3,1870.9 180.3,1817.7 174.8,1100.5 180.9,536.4 141.4,534.1 138.2,116.7 394.5,24.2 1363.8,46.7 1612.0,150.2 1612.0,152.4 1523.8,452.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0018/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.30155473731404,36.82921512675541]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.29805684261726,36.830469931348176]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.29619747049183,36.82714962833212]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.29969536518861,36.825894823739354]}},{"type":"Feature","properties":{"resourceCoords":[813.0,1848.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.2979955,36.8266401]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p3 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.10"},{"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":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1558.8,65.7 1187.0,119.2 1187.0,112.9 827.5,80.6 827.7,59.4 232.4,49.6 188.4,48.9 205.9,435.7 183.9,435.4 255.7,1127.5 323.4,1127.9 366.0,1122.0 543.5,1129.5 675.0,1130.5 678.0,1135.2 707.9,1813.6 758.0,1861.2 1154.4,1878.0 1222.7,1802.8 1565.5,1856.3 1605.8,438.7 1581.1,99.1 1558.8,65.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[804.0,445.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.297745,36.8330796]}},{"type":"Feature","properties":{"resourceCoords":[804.0,59.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.2977872,36.8338794]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p4","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"93.2,1718.7 89.2,1334.0 89.0,885.6 101.3,831.8 103.5,506.6 86.2,475.0 87.2,72.5 1152.2,80.0 1150.0,111.2 1612.0,163.7 1612.0,169.2 1537.9,172.5 1521.4,229.7 1587.4,810.0 1541.8,1682.5 1571.8,1726.9 1159.5,1789.0 1159.5,1782.0 760.2,1748.8 760.3,1725.2 99.6,1718.7 93.2,1718.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[734.0,77.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.2979243,36.8369568]}},{"type":"Feature","properties":{"resourceCoords":[734.0,1725.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.2977872,36.8338794]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p5","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.77"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1558.1,260.5 1558.1,259.5 1552.5,153.5 1424.4,70.4 614.2,41.2 84.2,92.1 33.6,626.5 93.5,1627.3 1.0,1635.0 1.0,1661.0 286.2,1746.7 286.3,1801.0 641.7,1798.4 1474.3,1790.0 1472.6,722.2 1504.0,724.2 1552.6,260.6 1558.1,260.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1077.0,1151.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.2979713,36.8376946]}},{"type":"Feature","properties":{"resourceCoords":[1077.0,726.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.296982,36.837716]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p6","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"46.0,547.5 102.3,134.8 622.3,187.4 784.2,42.5 1370.8,25.8 1526.5,73.8 1549.7,368.4 1524.4,368.3 1438.0,650.3 1384.4,650.1 1384.8,824.2 1385.1,1000.9 1389.0,1822.7 109.5,1817.8 106.2,777.4 65.9,777.2 46.0,547.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[741.0,1427.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.300992,36.8376293]}},{"type":"Feature","properties":{"resourceCoords":[107.0,1032.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.3025173,36.838336]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p7","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"196.7,1372.6 194.4,1288.9 185.2,968.4 179.6,121.7 1461.9,122.1 1463.7,521.2 1481.0,552.4 1481.0,874.9 1469.2,928.4 1472.3,1373.0 1478.9,1754.4 1256.8,1753.8 911.3,1752.7 757.5,1768.0 200.0,1766.0 196.7,1372.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[824.0,521.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.3009078,36.8361361]}},{"type":"Feature","properties":{"resourceCoords":[200.0,1766.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.3022916,36.8337572]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p8","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.74"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"187.8,894.9 196.6,541.5 202.8,108.5 755.0,123.1 907.6,111.4 1249.9,120.3 1428.0,124.9 1443.1,546.8 1419.2,546.2 1490.2,1301.6 1531.9,1307.0 1478.6,1787.1 892.3,1863.3 852.4,1811.5 370.4,1793.6 344.6,1742.6 173.6,1741.7 188.6,1020.4 167.1,894.4 187.8,894.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[829.0,907.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.3007075,36.832302]}},{"type":"Feature","properties":{"resourceCoords":[197.0,513.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.3022558,36.8329882]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0009__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portsmouth, Virginia | 1893 | sanborn09058_002 p9 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"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":"2026-10-19T20:36:40Z","modified":"2026-10-19T20:36:40Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0009__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"481.6,47.4 551.6,41.2 567.5,217.2 481.6,457.4 481.6,470.0 477.1,470.0 475.6,474.3 187.7,472.8 185.8,535.9 64.6,595.5 58.7,1030.8 153.5,1384.7 141.0,1805.7 328.8,1867.5 562.0,1818.2 855.3,1876.1 1487.4,1873.8 1481.5,1911.6 1482.3,1912.0 1488.1,1912.0 1495.3,1912.0 1497.3,1855.2 1502.8,1729.8 1522.1,1578.7 1521.6,1295.7 1507.2,1250.6 1502.9,1006.5 1504.0,1.8 481.6,7.7 481.6,47.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884pm:g3884pm_g090581893:09058_1893-0009__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1117.0,1255.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.30548671905999,36.83752484795853]}},{"type":"Feature","properties":{"resourceCoords":[1508.0,37.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.30253563446945,36.83684337336095]}}]}}]}