{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn09064_008.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Richmond, Virginia | 1925 | key map | mapsnap generated fit (2026-10-17)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-17"},{"label":"run","value":"corpus-v2"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884rm:g3884rm_g09064192503:09064_03_1925-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Richmond, Virginia | 1925 | sanborn09064_008 p0","metadata":[{"label":"streets","value":"166"},{"label":"intersections","value":"380"}],"created":"2026-10-17T04:07:00Z","modified":"2026-10-17T04:07:00Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884rm:g3884rm_g09064192503:09064_03_1925-0000/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884rm:g3884rm_g09064192503:09064_03_1925-0000","type":"ImageService3","width":1697,"height":2010},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,2010.0 0.0,0.0 1697.0,0.0 1697.0,2010.0 0.0,2010.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884rm:g3884rm_g09064192503:09064_03_1925-0000/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[986.9,1484.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.4451162,37.5637686]}},{"type":"Feature","properties":{"resourceCoords":[1385.7,1551.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-77.4320592,37.5531665]}}]}}]}