{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn07465_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Springfield, Oregon | 1960 | 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:gmd429m:g4294m:g4294sm:g4294sm_g074651960:07465_1960-0001a__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Springfield, Oregon | 1960 | sanborn07465_003 p1a [1]","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"21"},{"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":"8074.1"}],"created":"2026-09-22T08:29:56Z","modified":"2026-09-22T08:29:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294sm:g4294sm_g074651960:07465_1960-0001a__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294sm:g4294sm_g074651960:07465_1960-0001a","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,0.0 0.0,0.0 -0.0,1913 878.2,1913 878.2,1913 848.7,1058.9 1297.4,1081.7 1613,1073.6 1613,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294sm:g4294sm_g074651960:07465_1960-0001a__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[576.9,907.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-123.0184218,44.0418356]}},{"type":"Feature","properties":{"resourceCoords":[678.0,706.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-123.015425,44.0461765]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294sm:g4294sm_g074651960:07465_1960-0001b__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Springfield, Oregon | 1960 | sanborn07465_003 p1b [1]","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"39"},{"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":"8074.1"}],"created":"2026-09-22T08:29:56Z","modified":"2026-09-22T08:29:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294sm:g4294sm_g074651960:07465_1960-0001b__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294sm:g4294sm_g074651960:07465_1960-0001b","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,-0.0 0.0,-0.0 -0.0,1913 878.1,1913 878.1,1913 853.0,1063.2 1613,1046.3 1613,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294sm:g4294sm_g074651960:07465_1960-0001b__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[676.1,374.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-123.0881555,44.0510106]}},{"type":"Feature","properties":{"resourceCoords":[533.8,374.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-123.0881448,44.0543201]}}]}}]}