{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn09777_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Rock Springs, Wyoming | 1903 | key map | mapsnap generated fit (2026-09-24)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-24"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd426m:g4264m:g4264rm:g097771903:09777_1903-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rock Springs, Wyoming | 1903 | sanborn09777_003 p1","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"2"}],"created":"2026-09-24T01:17:23Z","modified":"2026-09-24T01:17:23Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd426m:g4264m:g4264rm:g097771903:09777_1903-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd426m:g4264m:g4264rm:g097771903:09777_1903-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1927.0 -0.0,-0.0 1628.0,0.0 1628.0,1927.0 -0.0,1927.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd426m:g4264m:g4264rm:g097771903:09777_1903-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[367.9,1288.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-109.2200143,41.5814638]}},{"type":"Feature","properties":{"resourceCoords":[367.9,1357.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-109.2190346,41.5804346]}}]}}]}