OF-17-06 Geologic Map of the Boreas Pass Quadrangle OF-17-06 Geologic Map of the Boreas Pass Quadrangle, Park and Summit Counties, Colorado
MS-24 Metal Mining Activity Map of Colorado and Directory MS-24 Metal Mining Activity Map of Colorado and Directory, 1984
MS-25 Metal Mining Activity Map of Colorado with Directory MS-25 Metal Mining Activity Map of Colorado with Directory, 1989
MS-28 Location Map and Descriptions of Metal Occurrences in Colorado with Notes on Economic Potential (detail) MS-28 Location Map and Descriptions of Metal Occurrences in Colorado with Notes on Economic Potential
IS-33 Gold Panning and Placering In Colorado: How and Where IS-33 Gold Panning and Placering In Colorado: How and Where
OF-99-03 Geologic Map of the Gribbles Park Quadrangle OF-99-03 Geologic Map of the Gribbles Park Quadrangle, Park and Fremont Counties, Colorado
OF-99-16 Evaluation of Mineral and Mineral Fuel Potential of NE Moffat County State Mineral Lands Administered by the Colorado State Land Board (detail) OF-99-16 Evaluation of Mineral and Mineral Fuel Potential of NE Moffat County State Mineral Lands Administered by the Colorado State Land Board
OF-99-15 Evaluation of Mineral and Mineral Fuel Potential of Park County State Mineral Lands Administered by the Colorado State Land Board (detail) OF-99-15 Evaluation of Mineral and Mineral Fuel Potential of Park County State Mineral Lands Administered by the Colorado State Land Board
IS-40 Colorado Minerals and Mineral Fuel Activity IS-40 Colorado Minerals and Mineral Fuel Activity, 1995
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