{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn08452_006.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Cameron, Texas | 1912 | key map | mapsnap generated fit (2026-09-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-20"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084521912:08452_1912-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cameron, Texas | 1912 | sanborn08452_006 p1 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"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":"8074.1"}],"created":"2026-09-20T17:06:09Z","modified":"2026-09-20T17:06:09Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084521912:08452_1912-0001__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084521912:08452_1912-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3557.8,8074.1 3557.8,6398.9 6878.4,6421.4 6878.4,0.0 -0.0,0.0 -0.0,8074.1 3557.8,8074.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084521912:08452_1912-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1328.8,2208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9786422,30.8552722]}},{"type":"Feature","properties":{"resourceCoords":[912.9,2208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.9791913,30.853862]}}]}}]}