{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn07641_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Ebensburg, Pennsylvania | 1899 | key map | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824em:g3824em_g076411899:07641_1899-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Ebensburg, Pennsylvania | 1899 | sanborn07641_003 p1 [2]","metadata":[{"label":"streets","value":"21"},{"label":"intersections","value":"40"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6878.4"},{"label":"split_canvas_h","value":"3984.1"}],"created":"2026-09-22T05:36:25Z","modified":"2026-09-22T05:36:25Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824em:g3824em_g076411899:07641_1899-0001__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824em:g3824em_g076411899:07641_1899-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,3984.1 3.8,3984.1 1459.7,3968.2 1546.4,2674.4 1568.0,2350.8 1578.9,2188.4 1594.7,2352.9 1634.6,2768.6 1691.0,2828.6 1668.5,3120.6 1749.6,3964.5 6878.4,3901.8 6878.4,0.0 6264.6,0.0 5438.6,0.0 0.0,-0.0 0.0,3984.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824em:g3824em_g076411899:07641_1899-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1535.6,2045.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.7249887,40.4842927]}},{"type":"Feature","properties":{"resourceCoords":[1800.1,1562.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-78.7271299,40.485213]}}]}}]}