{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn09021_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Fredericksburg, Virginia | 1907 | 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":"24"},{"label":"placed","value":"15"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef-snap 7, georef 7, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 16 panels"},{"label":"unplaced pages","value":"p11__2 (tier 1, 38.29747,-77.46049 +/-138m); p12__1 (tier 1, 38.29611,-77.46016 +/-259m); p12__2 (tier 1, 38.29546,-77.46106 +/-100m); p12__3 (tier 1, 38.29498,-77.45882 +/-122m); p1__1 (tier 1, 38.30553,-77.46702 +/-207m); p1__3 (tier 1, 38.30598,-77.46625 +/-100m); p2__1 (tier 1, 38.30513,-77.45659 +/-100m); p3__2 (tier 1, 38.30417,-77.46334 +/-127m); p7__1 (tier 1, 38.29791,-77.45954 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0010__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p10 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0010__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"107.2,49.6 100.3,185.3 96.8,404.0 110.3,444.4 112.4,598.7 109.0,1111.0 106.8,1843.0 129.2,1875.5 390.9,1878.3 390.8,1912.0 586.6,1912.0 586.8,1800.2 884.0,1863.4 1035.6,1848.8 1064.2,1791.3 1050.8,1354.0 1106.5,1101.9 1106.5,1096.5 1107.7,1096.5 1107.9,1095.4 1293.0,1092.0 1401.5,1002.5 1435.8,485.4 1518.4,223.6 1317.6,89.5 1055.3,102.6 1055.1,62.5 592.9,61.2 107.2,49.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0010__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[587.0,1152.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.45533036086675,38.29691511288315]}},{"type":"Feature","properties":{"resourceCoords":[112.0,1152.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.45635433336139,38.29651469177821]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0010__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p10 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.65"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4426.0"},{"label":"split_canvas_y","value":"4386.0"},{"label":"split_canvas_w","value":"2026.0"},{"label":"split_canvas_h","value":"3266.0"}],"created":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0010__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1612.0,1229.0 1341.6,1166.1 1339.3,1278.0 1143.4,1275.3 1130.6,1837.8 1564.1,1886.9 1588.1,1238.8 1612.0,1229.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0010__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1106.5,1096.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.4552138390037,38.29572932799817]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1096.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.45413283642407,38.29617211645639]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.45322365877328,38.29480500958787]}},{"type":"Feature","properties":{"resourceCoords":[1106.5,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.45430466135292,38.294362221129646]}},{"type":"Feature","properties":{"resourceCoords":[1339.3,1279.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.4545134,38.2956266]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0011__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p11 [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":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0011__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"743.3,1888.3 1491.7,1739.7 1586.3,1568.5 1612.0,1581.5 1612.0,1403.1 1574.2,1384.0 1518.5,1156.5 1487.3,1100.4 1420.5,1030.5 731.5,977.6 707.5,977.4 707.5,975.8 702.1,975.4 635.8,625.5 686.2,204.9 644.6,110.9 544.6,36.0 101.1,46.9 41.7,292.6 54.5,1742.7 215.7,1872.9 743.3,1888.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0011__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[426.0,1255.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.46338921389635,38.29594311852876]}},{"type":"Feature","properties":{"resourceCoords":[426.0,614.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.46407630858218,38.29700927840872]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p1 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"4414.4"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3237.6"}],"created":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1612.0,1810.8 1612.0,1807.6 1548.3,1807.3 1458.9,1682.1 1144.7,1668.2 1075.8,1152.0 495.4,1124.5 94.2,1203.3 104.8,1898.8 1047.4,1912.0 1263.6,1912.0 1263.5,1834.9 1603.4,1837.9 1604.0,1832.0 1605.3,1832.0 1612.0,1810.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1084.0,1830.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.46579206243379,38.30491021064451]}},{"type":"Feature","properties":{"resourceCoords":[354.0,1300.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.4679264303093,38.30518238273654]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p2 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.97"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3134.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3317.6"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"830.7,134.7 826.6,154.5 905.8,324.9 854.3,626.8 900.5,731.6 812.7,974.6 885.6,1240.1 844.1,1637.1 815.1,1668.2 935.7,1794.8 935.6,1822.7 1439.8,1820.6 1612.0,1671.0 1575.2,1664.4 1530.5,995.4 1571.8,549.1 1496.0,388.6 1472.4,180.3 1434.2,191.6 1433.2,242.7 939.1,348.7 939.6,132.9 830.7,134.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1429.1,1269.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.462602,38.308423]}},{"type":"Feature","properties":{"resourceCoords":[1429.1,696.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.463199,38.309367]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0002__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p2 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.49"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1562.4"},{"label":"split_canvas_w","value":"3134.4"},{"label":"split_canvas_h","value":"6089.6"}],"created":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0002__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"35.9,756.2 139.3,753.2 142.6,957.1 610.0,851.0 610.0,802.7 646.1,791.6 601.7,456.0 265.2,448.9 77.2,535.5 35.9,756.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0002__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,390.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.46550929715907,38.310414889414396]}},{"type":"Feature","properties":{"resourceCoords":[783.6,390.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.46376538299762,38.31107247179037]}},{"type":"Feature","properties":{"resourceCoords":[783.6,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.46214881549825,38.30839546725141]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-77.46389272965969,38.307737884875436]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p3 [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":"2611.6"},{"label":"split_canvas_h","value":"4868.0"}],"created":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"502.9,1200.7 570.1,1199.4 574.1,973.7 572.5,622.2 573.0,24.6 548.5,24.5 98.5,58.4 32.5,997.6 116.4,1198.5 502.8,1190.3 502.9,1200.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[573.9,1187.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.46468997632664,38.30173746751798]}},{"type":"Feature","properties":{"resourceCoords":[573.9,42.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.46591138401281,38.30367628013345]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0003__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p3 [3]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"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":"2589.2"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"5062.8"}],"created":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0003__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"135.8,1259.0 133.7,1855.0 595.7,1848.6 1524.0,1844.6 1525.3,1245.8 1530.4,712.7 1399.8,714.9 1399.8,689.5 996.6,690.2 987.2,720.4 649.5,719.1 650.0,798.8 687.2,799.0 706.8,1047.4 652.9,1219.5 135.8,1259.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0003__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[469.0,1256.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.465215,38.303991]}},{"type":"Feature","properties":{"resourceCoords":[1042.0,1846.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.4633426,38.3034743]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"129.8,1869.3 514.6,1869.1 611.5,1866.9 1095.8,1866.4 1331.1,1872.8 1538.2,1871.8 1562.2,263.5 1502.9,57.0 1275.9,27.8 1104.7,177.0 607.8,180.1 607.9,152.6 488.7,28.2 465.9,52.7 259.0,31.1 143.0,86.7 47.0,281.0 42.8,697.8 1.0,698.0 1.0,723.7 132.5,721.1 129.2,1261.9 129.8,1869.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[614.0,724.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.46247598728758,38.3062013954305]}},{"type":"Feature","properties":{"resourceCoords":[1090.0,1266.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.46088942277747,38.30568723617718]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"43.4,1845.1 43.5,1532.1 73.3,1503.9 43.5,1497.9 43.7,666.9 112.4,665.9 117.5,435.8 117.7,77.3 590.1,71.9 1539.2,69.8 1536.3,697.2 1536.8,1521.1 1534.0,1818.9 1035.3,1809.0 572.1,1815.3 581.5,1848.5 43.4,1845.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1038.0,1246.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.46211835878904,38.301519622058166]}},{"type":"Feature","properties":{"resourceCoords":[1526.0,1246.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.46108828345277,38.30192411212657]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"405.7,65.8 502.1,64.1 983.5,66.0 1217.4,73.5 1423.3,73.5 1522.8,218.7 1577.8,1619.0 1524.9,1818.2 1445.8,1806.1 457.0,1794.2 19.1,1789.0 21.7,1495.3 20.8,682.9 23.2,64.2 405.7,65.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[512.0,643.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.46063698236722,38.30332119545866]}},{"type":"Feature","properties":{"resourceCoords":[1418.0,1816.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.45744205999424,38.30211083531725]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0007__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p7 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.94"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1613.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4838.8"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0007__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"794.0,1754.2 925.0,1756.4 958.0,1832.5 988.2,1869.0 1092.2,1852.0 1256.5,1840.7 1466.5,1843.2 1522.0,1843.8 1527.7,1242.8 1511.6,1242.8 1504.7,660.0 1497.9,660.0 1476.3,69.7 1365.8,68.2 876.2,58.0 421.4,63.8 430.1,94.7 430.6,96.3 452.2,96.4 761.0,1203.5 794.0,1754.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0007__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[877.2,649.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.4608904,38.2995893]}},{"type":"Feature","properties":{"resourceCoords":[876.2,58.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.4615294,38.3005848]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0007__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p7 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.84"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4644.0"},{"label":"split_canvas_w","value":"2951.2"},{"label":"split_canvas_h","value":"3008.0"}],"created":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0007__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1.0,1863.0 1.0,1882.0 413.7,1851.6 407.2,1912.0 734.2,1909.9 675.1,1569.8 698.6,1192.0 495.5,1169.0 44.2,1275.5 6.5,1161.0 1.0,1863.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0007__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[597.9,1303.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.4652634,38.3085608]}},{"type":"Feature","properties":{"resourceCoords":[597.9,1864.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.4646519,38.3076094]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p8","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1381.5,1840.9 918.4,1837.1 431.8,1823.0 166.0,1819.1 122.5,1818.4 129.8,1217.5 113.7,1217.5 108.2,634.8 101.5,634.6 81.5,44.4 407.0,49.6 1391.5,65.6 1470.3,78.0 1468.6,84.2 1569.9,359.7 1511.2,650.5 1579.5,1165.7 1564.4,1766.9 1556.7,1809.9 1612.0,1847.3 1612.0,1870.7 1381.6,1881.0 1381.5,1840.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[922.0,1218.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.4571523,38.2998111]}},{"type":"Feature","properties":{"resourceCoords":[922.0,58.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.4584089,38.3017644]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fredericksburg, Virginia | 1907 | sanborn09021_005 p9","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.81"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T14:33:54Z","modified":"2026-10-19T14:33:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1531.4,1908.5 1523.4,1161.3 1519.7,638.2 1515.3,480.6 1501.0,439.6 1501.5,216.4 1506.6,77.7 1235.8,78.9 1135.0,79.3 920.9,80.3 753.6,94.5 648.0,113.6 616.6,76.9 582.2,1.0 448.3,1.0 454.1,77.6 393.6,169.8 237.8,208.0 132.7,157.4 21.9,370.9 1.0,360.9 1.0,538.8 44.3,559.6 39.7,686.8 108.5,711.9 142.8,825.4 35.9,1081.2 30.9,1394.2 51.6,1468.8 129.9,1474.1 171.6,1858.0 1511.4,1880.2 1531.4,1908.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884fm:g3884fm_g090211907:09021_1907-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1035.0,646.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.45797,38.297049]}},{"type":"Feature","properties":{"resourceCoords":[355.0,1758.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.458278,38.294648]}}]}}]}