{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn01353_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Tarpon Springs, Florida | 1919 | 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:gmd393m:g3934m:g3934tm:g3934tm_g013531919:01353_1919-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Tarpon Springs, Florida | 1919 | sanborn01353_003 p1 [2]","metadata":[{"label":"streets","value":"21"},{"label":"intersections","value":"53"},{"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":"3774.3"}],"created":"2026-09-23T05:15:51Z","modified":"2026-09-23T05:15:51Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd393m:g3934m:g3934tm:g3934tm_g013531919:01353_1919-0001__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd393m:g3934m:g3934tm:g3934tm_g013531919:01353_1919-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6878.4,0.0 4814.5,0.0 3842.2,0.0 -0.0,-0.0 0.0,3707.6 6878.4,3774.3 6878.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd393m:g3934m:g3934tm:g3934tm_g013531919:01353_1919-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2277.9,1574.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.750525,28.146242]}},{"type":"Feature","properties":{"resourceCoords":[1744.7,1018.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-82.7567695,28.1526691]}}]}}]}