{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn09466_007.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Wellsburg, West-Virginia | 1923 | key map | 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"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894wm:g3894wm_g094661923:09466_1923-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Wellsburg, West-Virginia | 1923 | sanborn09466_007 p1 [3]","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"29"},{"label":"split_canvas_x","value":"3339.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3539.4"},{"label":"split_canvas_h","value":"8074.1"}],"created":"2026-10-19T14:20:25Z","modified":"2026-10-19T14:20:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894wm:g3894wm_g094661923:09466_1923-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894wm:g3894wm_g094661923:09466_1923-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,0.0 846.2,0.0 834.8,1423.8 834.8,1913 1613,1913 1613,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd389m:g3894m:g3894wm:g3894wm_g094661923:09466_1923-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1000.2,760.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.6123643,40.2707288]}},{"type":"Feature","properties":{"resourceCoords":[970.9,493.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.610866,40.278235]}}]}}]}