{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn04422_004.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Aberdeen, Mississippi | 1899 | 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:gmd398m:g3984m:g3984am:g3984am_g044221899:04422_1899-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Aberdeen, Mississippi | 1899 | sanborn04422_004 p1 [2]","metadata":[{"label":"streets","value":"26"},{"label":"intersections","value":"102"},{"label":"split_canvas_x","value":"3183.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3695.4"},{"label":"split_canvas_h","value":"8074.1"}],"created":"2026-09-23T09:40:28Z","modified":"2026-09-23T09:40:28Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984am:g3984am_g044221899:04422_1899-0001__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984am:g3984am_g044221899:04422_1899-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6878.4,8074.1 6878.4,0.0 4968.0,0.0 4123.7,0.0 3183.2,0.0 3183.1,3016.8 3183.0,7400.0 3183.0,8074.1 6878.4,8074.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984am:g3984am_g044221899:04422_1899-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5350.1,3067.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.5423773,33.8239033]}},{"type":"Feature","properties":{"resourceCoords":[3463.3,2839.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.5525791,33.8254972]}}]}}]}