{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00427_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Blue Lake, California | 1919 | 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":"10"},{"label":"placed","value":"3"},{"label":"unplaced","value":"7"},{"label":"fit sources","value":"snap:0 2, 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, 40.88120,-123.98913 +/-191m); p1__2 (tier 4, 40.88120,-123.98913 +/-191m); p1__4 (tier 4, 40.88120,-123.98913 +/-191m); p3__2 (tier 1, 40.88225,-123.98041 +/-100m); p4 (tier 4, 40.88120,-123.98913 +/-191m); p5__1 (tier 4, 40.88120,-123.98913 +/-191m); p5__2 (tier 1, 40.45177,-124.06755 +/-148m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271919:00427_1919-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Blue Lake, California | 1919 | sanborn00427_006 p1 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.32"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3842.4"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3809.6"}],"created":"2026-10-19T00:34:03Z","modified":"2026-10-19T00:34:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271919:00427_1919-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271919:00427_1919-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"33.5,1549.9 56.0,1762.6 313.4,1907.9 772.0,1912.0 790.6,1912.0 993.4,1808.0 1132.5,1479.8 1132.6,1470.7 1136.4,1470.7 1136.5,1470.4 1534.1,1468.7 1543.2,1230.4 1612.0,1202.7 1612.0,1146.9 768.8,1068.7 777.0,988.5 740.0,999.2 358.9,1085.0 313.1,1091.3 309.3,1156.8 332.1,1223.5 355.0,1243.9 267.9,1258.8 264.9,1258.7 33.5,1549.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271919:00427_1919-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,960.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-123.99029014955437,40.881562093106204]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,960.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-123.98755077709147,40.87952772057498]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-123.98912936398625,40.878295381718026]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-123.99186873644915,40.88032975424925]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271919:00427_1919-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Blue Lake, California | 1919 | sanborn00427_006 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T00:34:03Z","modified":"2026-10-19T00:34:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271919:00427_1919-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271919:00427_1919-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1592.0,1569.9 1568.2,1503.6 1571.2,1438.2 1584.2,1029.6 1582.8,574.1 1590.3,195.1 1584.2,159.3 1546.9,72.9 1547.2,1.0 1546.8,1.0 1517.8,60.6 1274.9,28.6 984.3,86.2 414.0,11.4 91.7,79.5 28.1,259.1 20.8,1605.8 121.0,1674.7 136.7,1796.2 321.5,1791.2 559.0,1881.3 1298.5,1893.0 1299.1,1897.7 1525.5,1605.6 1528.4,1605.6 1612.0,1590.7 1592.0,1569.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271919:00427_1919-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1107.0,570.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-123.98929585700375,40.88270031483341]}},{"type":"Feature","properties":{"resourceCoords":[587.0,1471.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-123.99169502484554,40.88221099242429]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271919:00427_1919-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Blue Lake, California | 1919 | sanborn00427_006 p3 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.68"},{"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":"7652.0"}],"created":"2026-10-19T00:34:03Z","modified":"2026-10-19T00:34:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271919:00427_1919-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271919:00427_1919-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"76.7,1793.3 453.1,1700.6 489.5,1689.3 483.0,1769.0 1321.0,1830.1 1322.2,1885.5 1558.9,1784.8 1505.5,1575.1 1593.7,1263.9 1601.0,433.0 1304.8,431.1 1290.4,431.0 1287.9,421.5 1168.3,27.5 90.5,44.5 1.0,332.9 1.0,443.8 37.6,527.1 43.9,562.6 38.4,940.0 42.2,1393.5 31.4,1800.5 76.7,1793.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004271919:00427_1919-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-123.98696148260187,40.8833393494578]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-123.98425459206126,40.8812477859627]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-123.98751250956329,40.878803438896554]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-123.9902194001039,40.88089500239166]}}]}}]}