{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn04247_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Alden, Minnesota | 1917 | 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":"4"},{"label":"placed","value":"2"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 43.67177,-93.57545 +/-117m); p1__4 (tier 4, 43.67177,-93.57545 +/-117m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144am:g042471917:04247_1917-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alden, Minnesota | 1917 | sanborn04247_002 p1 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.60"},{"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":"2026-10-18T03:45:23Z","modified":"2026-10-18T03:45:23Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144am:g042471917:04247_1917-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144am:g042471917:04247_1917-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"303.1,758.5 253.4,771.2 246.2,781.0 215.1,781.1 74.2,817.4 40.2,1316.7 58.3,1558.7 129.7,1663.3 405.6,1656.9 406.1,1659.5 409.0,1659.4 408.6,1672.2 442.3,1840.3 830.7,1880.1 1228.8,1856.6 1516.7,1771.1 1586.5,1674.7 1552.3,1569.2 1535.1,1409.8 1532.2,1191.1 1511.4,1190.6 1460.3,717.1 1086.1,713.7 897.1,715.1 896.1,712.0 889.0,711.9 653.4,29.3 449.6,72.6 489.9,104.6 415.8,549.3 303.1,758.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144am:g042471917:04247_1917-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1534.0,1670.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.5740077,43.6718393]}},{"type":"Feature","properties":{"resourceCoords":[592.0,1184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.5759699,43.6704297]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144am:g042471917:04247_1917-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Alden, Minnesota | 1917 | sanborn04247_002 p1 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.37"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2671.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3780.4"},{"label":"split_canvas_h","value":"2860.4"}],"created":"2026-10-18T03:45:23Z","modified":"2026-10-18T03:45:23Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144am:g042471917:04247_1917-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144am:g042471917:04247_1917-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"871.7,1.0 790.8,1.0 811.4,198.5 831.8,199.0 833.8,412.8 849.9,567.8 883.2,671.9 1578.9,705.0 1586.2,314.1 1501.6,25.8 875.0,13.2 871.7,1.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144am:g042471917:04247_1917-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[831.8,667.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.5740077,43.6718393]}},{"type":"Feature","properties":{"resourceCoords":[831.8,199.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-93.5751981,43.672114]}}]}}]}