{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn09015_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Elkton, Virginia | 1913 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"10"},{"label":"placed","value":"5"},{"label":"unplaced","value":"5"},{"label":"fit sources","value":"georef 5"},{"label":"key map","value":"none"},{"label":"split sheets","value":"4 sheet(s) cut into 10 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 38.40919,-78.61855 +/-682m); p2__2 (tier 2, 38.40862,-78.62274 +/-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://tile.loc.gov/image-services/iiif/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":"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":"2026-09-21T14:43:29Z","modified":"2026-09-21T14:43:29Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0001__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,7652.0 1932.5,7652.0 2964.1,7652.0 6452.0,7269.9 6452.0,3872.8 3122.8,3896.0 3122.4,0.0 0.0,-0.0 0.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3884.0,3536.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.626426,38.408999]}},{"type":"Feature","properties":{"resourceCoords":[3884.0,488.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.62816,38.409281]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/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":"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":"2026-09-21T14:43:29Z","modified":"2026-09-21T14:43:29Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0002__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,4310.0 6452.0,2417.4 5151.1,3003.6 5141.8,1505.9 5368.9,1509.4 5362.8,0.0 -0.0,-0.0 -0.0,258.1 853.7,422.2 582.1,3773.6 -0.0,6554.1 -0.0,7652.0 6452.0,7652.0 6452.0,6018.6 5167.7,5673.5 5162.3,4799.9 6452.0,4310.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2200.0,4304.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.623216,38.407946]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,2860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.621214,38.408608]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/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":"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":"2026-09-21T14:43:29Z","modified":"2026-09-21T14:43:29Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0003__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0003/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,4610.3 1297.5,4035.2 1285.9,5917.8 -0.0,6379.7 -0.0,7266.0 1375.4,7652.0 2928.4,7652.0 2928.8,6005.6 4759.6,5319.2 4749.6,1554.0 6452.0,1538.8 6452.0,0.0 -0.0,-0.0 -0.0,1622.6 344.4,1624.7 323.0,3127.5 -0.0,3120.5 -0.0,4610.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2328.0,3592.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.61999,38.409019]}},{"type":"Feature","properties":{"resourceCoords":[328.0,4468.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.621214,38.408608]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/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":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2750.8"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4901.2"}],"created":"2026-09-21T14:43:29Z","modified":"2026-09-21T14:43:29Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0004__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,2750.8 449.2,2787.3 468.3,4372.6 -0.0,4370.8 0.0,5996.0 1633.2,5987.6 1640.8,7652.0 1924.0,7652.0 3068.0,7652.0 6452.0,7652.0 6452.0,2750.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[456.0,3810.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.612859,38.410387]}},{"type":"Feature","properties":{"resourceCoords":[456.0,5733.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.612896,38.409498]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/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":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5987.6"},{"label":"split_canvas_w","value":"1640.8"},{"label":"split_canvas_h","value":"1664.4"}],"created":"2026-09-21T14:43:29Z","modified":"2026-09-21T14:43:29Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0004__3/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd388m:g3884m:g3884em:g3884em_g090151913:09015_1913-0004/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1318.9,7652.0 1293.6,6053.8 149.2,5995.2 0.0,5996.0 -0.0,7652.0 1318.9,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/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":[0.0,5987.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.61361475458193,38.41093057994799]}},{"type":"Feature","properties":{"resourceCoords":[1640.8,5987.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.61263382553514,38.41090267309415]}},{"type":"Feature","properties":{"resourceCoords":[1640.8,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.61267008197375,38.410121643073694]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7652.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-78.61365101102054,38.41014954992753]}},{"type":"Feature","properties":{"resourceCoords":[1304.6,7097.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.612859,38.410387]}}]}}]}