{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn06578_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Alliance, Ohio | 1892 | 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:gmd408m:g4084m:g4084am:g4084am_g065781892:06578_1892-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alliance, Ohio | 1892 | sanborn06578_003 p1","metadata":[{"label":"streets","value":"32"},{"label":"intersections","value":"107"}],"created":"2026-09-23T11:44:51Z","modified":"2026-09-23T11:44:51Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd408m:g4084m:g4084am:g4084am_g065781892:06578_1892-0001/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd408m:g4084m:g4084am:g4084am_g065781892:06578_1892-0001/info.json","type":"ImageService2","height":7708,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7708.0 0.0,0.0 6512.0,0.0 6512.0,7708.0 -0.0,7708.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd408m:g4084m:g4084am:g4084am_g065781892:06578_1892-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3092.9,3348.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.094849,40.920494]}},{"type":"Feature","properties":{"resourceCoords":[3327.0,2280.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.093386,40.925338]}}]}}]}