{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn04991_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Fort Benton, Montana | 1902 | 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":"7"},{"label":"placed","value":"1"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 47.82612,-110.65955 +/-100m); p1__3 (tier 4, 47.82612,-110.65955 +/-100m); p1__4 (tier 4, 47.82612,-110.65955 +/-100m); p2 (tier 2, 47.82750,-110.65790 +/-100m); p3__1 (tier 2, 47.82732,-110.66013 +/-100m); p3__2 (tier 2, 47.82732,-110.66013 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254fm:g4254fm_g049911902:04991_1902-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Fort Benton, Montana | 1902 | sanborn04991_003 p1 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.15"},{"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":"2026-10-18T22:53:36Z","modified":"2026-10-18T22:53:36Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254fm:g4254fm_g049911902:04991_1902-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254fm:g4254fm_g049911902:04991_1902-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1500.0,33.1 298.1,56.0 254.3,735.8 87.5,744.1 35.2,851.1 76.4,1063.2 23.7,1360.6 146.0,1661.0 110.2,1790.6 428.1,1871.7 1582.1,1866.2 1573.1,671.6 1555.7,623.7 1320.5,621.0 1299.0,567.5 1323.3,290.6 1325.0,290.6 1325.0,289.2 1347.4,290.1 1569.9,285.0 1500.0,33.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254fm:g4254fm_g049911902:04991_1902-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1246.0,208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-110.6572624,47.8267897]}},{"type":"Feature","properties":{"resourceCoords":[242.0,208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-110.6595969,47.8279238]}}]}}]}