{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn07545_006.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Braddock, Pennsylvania | 1914 | 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:g3824bm:g3824bm_g075451914:07545_1914-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Braddock, Pennsylvania | 1914 | sanborn07545_006 p1","metadata":[{"label":"streets","value":"86"},{"label":"intersections","value":"113"}],"created":"2026-09-22T13:29:28Z","modified":"2026-09-22T13:29:28Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075451914:07545_1914-0001/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075451914:07545_1914-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,7652.0 0.0,0.0 2900.8,0.0 3370.5,0.0 6452.0,0.0 6452.0,7652.0 0.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075451914:07545_1914-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4561.4,5465.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8595755,40.4039821]}},{"type":"Feature","properties":{"resourceCoords":[4390.4,4168.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8724784,40.4112125]}}]}}]}