{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00391_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Arcata, California | 1908 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"21"},{"label":"placed","value":"1"},{"label":"unplaced","value":"20"},{"label":"fit sources","value":"georef 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 8 panels"},{"label":"unplaced pages","value":"p10__1 (tier 3, 40.86546,-124.08811 +/-609m); p10__2 (tier 3, 40.86546,-124.08811 +/-609m); p10__3 (tier 3, 40.86546,-124.08811 +/-609m); p11__1 (tier 4, 40.87107,-124.09238 +/-100m); p11__2 (tier 4, 40.87107,-124.09238 +/-100m); p11__3 (tier 4, 40.87107,-124.09238 +/-100m); p12 (tier 4, 40.87107,-124.09238 +/-100m); p13 (tier 3, 40.87016,-124.07989 +/-609m); p1__2 (tier 3, 40.87711,-124.09122 +/-609m); p1__3 (tier 3, 40.87711,-124.09122 +/-609m); p1__4 (tier 3, 40.87711,-124.09122 +/-609m); p2 (tier 3, 40.87512,-124.08676 +/-609m); p3 (tier 3, 40.87418,-124.08312 +/-609m); p4__1 (tier 3, 40.87127,-124.09188 +/-609m); p4__2 (tier 3, 40.87127,-124.09188 +/-609m); p5 (tier 3, 40.87198,-124.08871 +/-609m); p6 (tier 3, 40.87139,-124.08518 +/-609m); p7 (tier 3, 40.86960,-124.08197 +/-609m); p8 (tier 3, 40.86869,-124.08963 +/-609m); p9 (tier 3, 40.86795,-124.08616 +/-609m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364am:g4364am_g003911908:00391_1908-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Arcata, California | 1908 | sanborn00391_004 p1 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.02"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"5554.8"}],"created":"2026-10-19T00:23:57Z","modified":"2026-10-19T00:23:57Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364am:g4364am_g003911908:00391_1908-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364am:g4364am_g003911908:00391_1908-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"944.8,1346.7 1359.0,1345.2 1421.7,1283.7 1566.0,1232.4 1589.0,1141.8 1584.6,765.9 1550.5,667.4 1530.2,181.4 1477.0,84.9 1398.5,96.6 1361.5,66.3 1275.7,61.3 1100.9,89.3 928.7,56.0 630.8,152.7 436.4,159.4 272.2,99.1 128.2,173.6 87.9,158.2 85.0,256.5 117.6,359.0 70.1,447.2 75.9,631.9 112.5,735.9 102.3,780.6 165.6,772.4 213.0,878.2 170.6,910.6 267.7,940.7 292.0,980.0 523.0,980.3 592.4,955.9 650.1,980.2 825.7,980.3 855.1,1012.2 871.5,1302.6 944.8,1346.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364am:g4364am_g003911908:00391_1908-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[761.0,880.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-124.093069,40.8704031]}},{"type":"Feature","properties":{"resourceCoords":[735.0,694.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-124.0927635,40.8712]}}]}}]}