{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn09015_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Elkton, Virginia | 1913 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"11"},{"label":"placed","value":"5"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef 5"},{"label":"key map","value":"none"},{"label":"split sheets","value":"4 sheet(s) cut into 11 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 38.40919,-78.61855 +/-682m); p1__3 (tier 4, 38.40919,-78.61855 +/-682m); p2__2 (tier 2, 38.40862,-78.62273 +/-128m); p3__2 (tier 2, 38.40882,-78.62105 +/-100m); p3__3 (tier 2, 38.40882,-78.62105 +/-100m); p4__1 (tier 4, 38.40919,-78.61855 +/-682m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Elkton, Virginia | 1913 | sanborn09015_001 p1 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.46"},{"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":"2026-10-18T20:47:34Z","modified":"2026-10-18T20:47:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"483.8,1883.4 1612.0,1688.8 1612.0,1643.0 1234.8,1582.0 1185.5,979.5 811.2,974.3 781.5,974.5 781.5,973.9 775.8,973.8 725.8,696.6 747.4,71.8 694.9,37.4 44.3,74.0 30.9,1831.9 68.1,1865.7 72.8,1896.3 101.4,1900.3 483.9,1867.9 483.8,1883.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[971.0,884.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.626426,38.408999]}},{"type":"Feature","properties":{"resourceCoords":[971.0,122.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.62816,38.409281]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Elkton, Virginia | 1913 | sanborn09015_001 p2 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.64"},{"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":"2026-10-18T20:47:34Z","modified":"2026-10-18T20:47:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"17.9,1544.0 14.2,1760.2 72.5,1858.7 859.8,1811.0 1208.8,1883.8 1556.4,1871.3 1611.7,1771.0 1606.4,1673.4 1603.0,1673.0 1603.0,1629.0 1604.0,1628.9 1593.3,1430.7 1437.2,1143.1 1454.9,1136.8 1465.2,671.8 1370.0,715.0 1367.5,472.0 1350.0,472.0 1342.0,472.0 1342.0,472.0 1337.2,78.7 1172.9,17.3 918.2,70.9 725.7,17.1 92.2,26.8 70.8,1181.1 56.2,1178.2 17.9,1544.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[550.0,1076.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.623216,38.407946]}},{"type":"Feature","properties":{"resourceCoords":[1370.0,715.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.621214,38.408608]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Elkton, Virginia | 1913 | sanborn09015_001 p3 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.56"},{"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":"2026-10-18T20:47:34Z","modified":"2026-10-18T20:47:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1190.0,389.9 1195.5,389.9 1225.8,389.6 1299.8,389.0 1534.8,338.2 1569.2,218.0 1476.6,112.8 1391.7,92.4 1341.8,29.2 1278.2,22.7 128.1,39.0 79.0,81.7 58.9,406.0 55.9,875.2 81.2,875.4 82.0,1117.0 176.9,1074.7 163.3,1537.0 145.7,1543.1 298.8,1830.1 678.9,1855.2 732.6,1502.0 1119.4,1336.6 1161.5,418.8 1190.0,389.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[582.0,898.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.61999,38.409019]}},{"type":"Feature","properties":{"resourceCoords":[82.0,1117.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.621214,38.408608]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Elkton, Virginia | 1913 | sanborn09015_001 p4 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.42"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2769.6"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4882.4"}],"created":"2026-10-18T20:47:34Z","modified":"2026-10-18T20:47:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"117.7,1078.2 117.1,1092.3 114.9,1429.2 408.9,1492.6 543.3,1809.2 806.3,1815.3 808.4,1880.9 969.5,1912.0 971.6,1912.0 1531.0,1879.2 1582.2,1658.7 1550.1,900.9 1315.4,864.8 1098.1,915.6 950.6,869.4 888.5,754.6 544.1,714.8 167.6,807.3 142.9,720.6 113.0,729.0 117.7,1078.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[114.0,952.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.612859,38.410387]}},{"type":"Feature","properties":{"resourceCoords":[114.0,1433.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.612896,38.409498]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0004__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Elkton, Virginia | 1913 | sanborn09015_001 p4 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.48"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5986.4"},{"label":"split_canvas_w","value":"1640.0"},{"label":"split_canvas_h","value":"1665.6"}],"created":"2026-10-18T20:47:34Z","modified":"2026-10-18T20:47:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0004__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"324.2,1554.5 239.7,1578.9 85.9,1505.4 59.0,1556.7 6.6,1501.1 1.0,1850.2 1.0,1911.2 329.6,1912.0 330.1,1898.5 324.2,1554.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0004__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1496.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.61361475425994,38.4109305801152]}},{"type":"Feature","properties":{"resourceCoords":[410.0,1496.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.6126338256311,38.41090267325277]}},{"type":"Feature","properties":{"resourceCoords":[410.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.61267008205425,38.41012164299206]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.6136510106831,38.41014954985449]}},{"type":"Feature","properties":{"resourceCoords":[326.0,1774.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.612859,38.410387]}}]}}]}