{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn04422_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Aberdeen, Mississippi | 1894 | 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:g3984am:g3984am_g044221894:04422_1894-0001__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 | 1894 | sanborn04422_003 p1 [2]","metadata":[{"label":"streets","value":"25"},{"label":"intersections","value":"87"},{"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":"2026-09-23T07:50:45Z","modified":"2026-09-23T07:50:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd398m:g3984m:g3984am:g3984am_g044221894:04422_1894-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd398m:g3984m:g3984am:g3984am_g044221894:04422_1894-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,1913 1613,0.0 1112.2,0.0 552.2,0.0 320.9,0.0 0.0,0.0 0.0,1495.5 0.0,1515.7 157.6,1540.0 433.9,1604.3 666.9,1658.6 469.3,1639.5 684.0,1662.6 902.1,1713.5 910.5,1690.6 911.7,1687.2 913.4,1682.6 964.6,1541.6 869.6,1913 1613,1913\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd398m:g3984m:g3984am:g3984am_g044221894:04422_1894-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[782.2,1269.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.5421974,33.828703]}},{"type":"Feature","properties":{"resourceCoords":[683.6,939.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.5436571,33.8334565]}}]}}]}