{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03297_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Covington, Louisiana | 1927 | key map | mapsnap generated fit (2026-09-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-20"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971927:03297_1927-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covington, Louisiana | 1927 | sanborn03297_005 p1","metadata":[{"label":"streets","value":"43"},{"label":"intersections","value":"225"}],"created":"2026-09-20T16:29:55Z","modified":"2026-09-20T16:29:55Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971927:03297_1927-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971927:03297_1927-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 -0.0,1913.0 0.0,-0.0 601.3,-0.0 610.7,-0.0 1283.7,-0.0 1613.0,-0.0 1613.0,882.5 1613.0,1098.3 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971927:03297_1927-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[312.1,755.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.1124674,30.4795334]}},{"type":"Feature","properties":{"resourceCoords":[609.7,795.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.105697,30.474395]}}]}}]}