{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn08486_001.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Crowell, Texas | 1921 | key map | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084861921:08486_1921-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Crowell, Texas | 1921 | sanborn08486_001 p1 [1]","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"32"},{"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":"4654.8"}],"created":"2026-09-23T00:53:30Z","modified":"2026-09-23T00:53:30Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084861921:08486_1921-0001__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084861921:08486_1921-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6878.4,4654.8 6878.4,0.0 0.0,0.0 0.0,4639.1 5074.8,4650.9 6870.7,4654.8 6878.4,4654.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd403m:g4034m:g4034cm:g4034cm_g084861921:08486_1921-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2008.1,2164.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.7250678,33.9830164]}},{"type":"Feature","properties":{"resourceCoords":[2008.1,3258.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-99.7251495,33.9768053]}}]}}]}