{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn07450_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Saint Helens, Oregon | 1916 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"11"},{"label":"placed","value":"1"},{"label":"unplaced","value":"10"},{"label":"fit sources","value":"georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"3 sheet(s) cut into 8 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 45.86245,-122.79815 +/-100m); p1__2 (tier 4, 45.86245,-122.79815 +/-100m); p1__3 (tier 1, 45.85735,-122.82815 +/-124m); p2 (tier 1, 45.86026,-122.81385 +/-260m); p4 (tier 1, 45.85656,-122.80369 +/-262m); p5__1 (tier 1, 45.86299,-122.79870 +/-214m); p5__2 (tier 4, 45.86245,-122.79815 +/-100m); p6__1 (tier 4, 45.86245,-122.79815 +/-100m); p6__2 (tier 4, 45.86245,-122.79815 +/-100m); p6__3 (tier 4, 45.86245,-122.79815 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294sm:g4294sm_g074501916:07450_1916-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Saint Helens, Oregon | 1916 | sanborn07450_002 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.13"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T21:32:24Z","modified":"2026-10-18T21:32:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294sm:g4294sm_g074501916:07450_1916-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294sm:g4294sm_g074501916:07450_1916-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"165.8,63.3 172.1,94.8 235.2,102.5 259.3,70.1 239.0,48.0 1545.9,51.8 1610.7,992.2 1581.7,1842.6 1343.9,1897.9 41.3,1880.2 12.9,1726.9 22.3,353.2 112.1,137.8 45.8,33.5 165.8,63.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd429m:g4294m:g4294sm:g4294sm_g074501916:07450_1916-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[505.0,404.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.79698107405878,45.86328962218509]}},{"type":"Feature","properties":{"resourceCoords":[39.0,404.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.79735057471481,45.86411616360342]}}]}}]}