{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn00169_009.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Phoenix, Arizona | 1949 | 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:gmd433m:g4334m:g4334pm:g00169194902:00169_02_1949-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Phoenix, Arizona | 1949 | sanborn00169_009 p0","metadata":[{"label":"streets","value":"117"},{"label":"intersections","value":"889"}],"created":"2026-09-22T08:33:05Z","modified":"2026-09-22T08:33:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334pm:g00169194902:00169_02_1949-0000/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334pm:g00169194902:00169_02_1949-0000/info.json","type":"ImageService2","height":7676,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,7676.0 -0.0,0.0 6452.0,0.0 6452.0,7676.0 0.0,7676.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd433m:g4334m:g4334pm:g00169194902:00169_02_1949-0000/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3840.2,5607.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-112.061816,33.471176]}},{"type":"Feature","properties":{"resourceCoords":[3369.0,4631.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-112.0711704,33.4875194]}}]}}]}