{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn07319_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Astoria, Oregon | 1908 | 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:g4294am:g4294am_g073191908:07319_1908-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Astoria, Oregon | 1908 | sanborn07319_005 p0","metadata":[{"label":"streets","value":"27"},{"label":"intersections","value":"44"}],"created":"2026-09-22T06:44:21Z","modified":"2026-09-22T06:44:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294am:g4294am_g073191908:07319_1908-0000/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294am:g4294am_g073191908:07319_1908-0000","type":"ImageService3","width":1687,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1979.0 -0.0,0.0 1687.0,-0.0 1687.0,1979.0 -0.0,1979.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294am:g4294am_g073191908:07319_1908-0000/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[485.8,1303.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-123.836655,46.189805]}},{"type":"Feature","properties":{"resourceCoords":[730.2,1593.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-123.836052,46.1796511]}}]}}]}