OF-04-08 Geological Map of the La Valley Quadrangle OF-04-08 Geological Map of the La Valley Quadrangle, Costilla County, Colorado
OF-03-21 Geologic Map of the Electra Lake 7.5-Minute Quadrangle OF-03-21 Geologic Map of the Electra Lake 7.5-Minute Quadrangle, La Plata County, Colorado
OF-03-04 Published Faults of the Colorado Front Range (detail) OF-03-04 Published Faults of the Colorado Front Range
OF-02-03 Geologic Map of the Keystone Quadrangle OF-02-03 Geologic Map of the Keystone Quadrangle, Summit County, Colorado
OF-02-07 Geologic Map of the Breckenridge Quadrangle OF-02-07 Geologic Map of the Breckenridge Quadrangle, Summit and Park Counties, Colorado
OF-01-05 Geologic Map of the Georgetown Quadrangle OF-01-05 Geologic Map of the Georgetown Quadrangle, Clear Creek County, Colorado
OF-00-02 Geologic Map of the Idaho Springs Quadrangle OF-00-02 Geologic Map of the Idaho Springs Quadrangle, Clear Creek County, Colorado
OF-90-02 Geology and Mineral Evaluation of Mineral Claims within the Snowmass Wilderness Area in the Vicinity of the Colorado-Highland Marble Quarry OF-90-02 Geology and Mineral Evaluation of Mineral Claims within the Snowmass Wilderness Area in the Vicinity of the Colorado-Highland Marble Quarry, Conundrum Creek, Pitkin County, Colorado