{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn08499_004.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Denton, Texas | 1901 | key map | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g084991901:08499_1901-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Denton, Texas | 1901 | sanborn08499_004 p1 [2]","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"36"},{"label":"split_canvas_x","value":"2647.9"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4230.5"},{"label":"split_canvas_h","value":"3545.2"}],"created":"2026-09-22T22:21:41Z","modified":"2026-09-22T22:21:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g084991901:08499_1901-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g084991901:08499_1901-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"671.1,886.3 1613,880.1 1613,880.1 1613,0.0 662.0,0.0 670.0,886.3 671.1,886.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g084991901:08499_1901-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1231.2,387.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.1343102,33.2145386]}},{"type":"Feature","properties":{"resourceCoords":[1257.4,512.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.13373,33.21156]}}]}}]}