{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn00218_004.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Clarendon, Arkansas | 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://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004cm:g002181919:00218_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":"Clarendon, Arkansas | 1919 | sanborn00218_004 p1 [2]","metadata":[{"label":"streets","value":"19"},{"label":"intersections","value":"41"},{"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":"8074.1"}],"created":"2026-09-23T02:21:52Z","modified":"2026-09-23T02:21:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004cm:g002181919:00218_1919-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004cm:g002181919:00218_1919-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1374.2,0.0 1277.2,0.0 1113.0,0.0 312.1,0.0 262.6,0.0 264.1,558.6 0.0,557.9 -0.0,1913 673.7,1913 672.1,851.2 1613,855.9 1613,0.0 1374.2,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004cm:g002181919:00218_1919-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[914.5,282.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.3079321,34.6935596]}},{"type":"Feature","properties":{"resourceCoords":[952.0,358.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.3069158,34.6915146]}}]}}]}