{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn04504_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Pass Christian, Mississippi | 1918 | 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:g3984pm:g3984pm_g045041918:04504_1918-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pass Christian, Mississippi | 1918 | sanborn04504_005 p1 [1]","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"13"},{"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":"3164.4"}],"created":"2026-09-23T07:49:00Z","modified":"2026-09-23T07:49:00Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984pm:g3984pm_g045041918:04504_1918-0001__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984pm:g3984pm_g045041918:04504_1918-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,2651.2 3234.8,2653.3 3236.4,3164.4 3237.9,3164.4 6878.4,3097.6 6878.4,-0.0 5539.4,0.0 5304.8,0.0 4528.8,0.0 3995.7,0.0 0.0,0.0 0.0,2651.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd398m:g3984m:g3984pm:g3984pm_g045041918:04504_1918-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1287.2,1803.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.24734,30.315781]}},{"type":"Feature","properties":{"resourceCoords":[296.5,1803.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.254644,30.313609]}}]}}]}