{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn00305_002.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Mena, Arkansas | 1908 | 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:gmd400m:g4004m:g4004mm:g003051908:00305_1908-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Mena, Arkansas | 1908 | sanborn00305_002 p1","metadata":[{"label":"streets","value":"31"},{"label":"intersections","value":"109"}],"created":"2026-09-22T19:28:04Z","modified":"2026-09-22T19:28:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004mm:g003051908:00305_1908-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004mm:g003051908:00305_1908-0001","type":"ImageService3","width":2150,"height":2550},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2150.0,2550.0 0.0,2550.0 -0.0,0.0 2150.0,0.0 2150.0,2550.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd400m:g4004m:g4004mm:g003051908:00305_1908-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[555.0,799.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.2419542,34.5822698]}},{"type":"Feature","properties":{"resourceCoords":[414.0,726.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.2423044,34.5844636]}}]}}]}