{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn04540_004.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"West Point, Mississippi | 1898 | 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:gmd398m:g3984m:g3984wm:g3984wm_g045401898:04540_1898-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"West Point, Mississippi | 1898 | sanborn04540_004 p1 [2]","metadata":[{"label":"streets","value":"20"},{"label":"intersections","value":"45"},{"label":"split_canvas_x","value":"2979.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3899.2"},{"label":"split_canvas_h","value":"8074.1"}],"created":"2026-09-23T11:56:09Z","modified":"2026-09-23T11:56:09Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd398m:g3984m:g3984wm:g3984wm_g045401898:04540_1898-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd398m:g3984m:g3984wm:g3984wm_g045401898:04540_1898-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,1913 1613,0.0 1589.1,0.0 1482.3,0.0 750.8,0.0 744.8,975.4 987.1,981.4 996.9,1913 1613,1913\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd398m:g3984m:g3984wm:g3984wm_g045401898:04540_1898-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1224.9,752.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.650439,33.6071182]}},{"type":"Feature","properties":{"resourceCoords":[1293.1,888.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.6491045,33.6048003]}}]}}]}