{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn00071_002.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Mobile, Alabama | 1891 | 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://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974mm:g3974mm_g000711891:00071_1891-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mobile, Alabama | 1891 | sanborn00071_002 p1","metadata":[{"label":"streets","value":"48"},{"label":"intersections","value":"259"}],"created":"2026-09-22T12:16:32Z","modified":"2026-09-22T12:16:32Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974mm:g3974mm_g000711891:00071_1891-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974mm:g3974mm_g000711891:00071_1891-0001","type":"ImageService3","width":1631,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,572.1 -0.0,-0.0 1631.0,0.0 1631.0,1949.0 -0.0,1949.0 -0.0,572.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974mm:g3974mm_g000711891:00071_1891-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[988.9,1131.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.039817,30.6891989]}},{"type":"Feature","properties":{"resourceCoords":[294.8,827.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.0555589,30.6900438]}}]}}]}