OF-15-06 Geologic Map of the Crawford Quadrangle OF-15-06 Geologic Map of the Crawford Quadrangle, Delta and Montrose Counties, Colorado
OF-12-09 Geologic Map of the Climax Quadrangle OF-12-09 Geologic Map of the Climax Quadrangle, Lake and Park Counties, Colorado
OF-11-04 Geologic Map of the Jones Hill Quadrangle OF-11-04 Geologic Map of the Jones Hill Quadrangle, Park County, Colorado
OF-08-18 Climax Quadrangle Geologic Map OF-08-18 Climax Quadrangle Geologic Map, Lake and Park Counties, Colorado
OF-06-07 Geologic Map of the Fairplay West Quadrangle OF-06-07 Geologic Map of the Fairplay West Quadrangle, Park County, Colorado
OF-05-04 Geologic Map of the Como Quadrangle OF-05-04 Geologic Map of the Como Quadrangle, Park County, Colorado
OF-05-08 Geologic Map of the Buena Vista West Quadrangle OF-05-08 Geologic Map of the Buena Vista West Quadrangle, Chaffee County, Colorado
OF-04-03 Geologic Map of the Alma Quadrangle OF-04-03 Geologic Map of the Alma Quadrangle, Park and Summit Counties, Colorado
OF-03-20 Geologic Map of the Copper Mountain Quadrangle OF-03-20 Geologic Map of the Copper Mountain Quadrangle, Summit, Eagle, Lake, and Park Counties, Colorado
OF-01-01 Geologic Map of the Castle Rock Gulch Quadrangle OF-01-01 Geologic Map of the Castle Rock Gulch Quadrangle, Chaffee and Park Counties, Colorado
OF-02-03 Geologic Map of the Keystone Quadrangle OF-02-03 Geologic Map of the Keystone Quadrangle, Summit County, Colorado
OF-01-05 Geologic Map of the Georgetown Quadrangle OF-01-05 Geologic Map of the Georgetown Quadrangle, Clear Creek County, Colorado