{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn00353_002.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Texarkana, Arkansas | 1953 | 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:gmd400m:g4004m:g4004tm:g003531953:00353_1953-0000__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Texarkana, Arkansas | 1953 | sanborn00353_002 p0 [1]","metadata":[{"label":"streets","value":"88"},{"label":"intersections","value":"323"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"7025.8"},{"label":"split_canvas_h","value":"8460.9"}],"created":"2026-09-22T10:20:51Z","modified":"2026-09-22T10:20:51Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd400m:g4004m:g4004tm:g003531953:00353_1953-0000__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd400m:g4004m:g4004tm:g003531953:00353_1953-0000/info.json","type":"ImageService2","height":8040,"width":6600},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,8460.9 7025.8,8460.9 7025.8,0.0 467.7,0.0 706.3,7831.5 0.0,7831.5 0.0,8460.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd400m:g4004m:g4004tm:g003531953:00353_1953-0000__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2301.5,6899.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.0249048,33.4081948]}},{"type":"Feature","properties":{"resourceCoords":[1690.5,3850.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.0307749,33.4363632]}}]}}]}