OF-15-10 Geology and Groundwater Resources of Douglas County OF-15-10 Geology and Groundwater Resources of Douglas County, Colorado
OF-15-11 Geology and Groundwater Resources of Park County OF-15-11 Geology and Groundwater Resources of Park County, Colorado
MS-24 Metal Mining Activity Map of Colorado and Directory MS-24 Metal Mining Activity Map of Colorado and Directory, 1984
MS-21 Groundwater Temperatures Map of Colorado (detail) MS-21 Groundwater Temperatures Map of Colorado
MS-25 Metal Mining Activity Map of Colorado with Directory MS-25 Metal Mining Activity Map of Colorado with Directory, 1989
MS-27 Surficial Geology and Geologic Hazards of the Douglas Pass-Baxter Region MS-27 Surficial Geology and Geologic Hazards of the Douglas Pass-Baxter Region, Rio Blanco and Garfield Counties, Colorado
OF-78-08 Location Map of Drill Holes Used for Coal Evaluation in the Denver and Cheyenne Basins OF-78-08 Location Map of Drill Holes Used for Coal Evaluation in the Denver and Cheyenne Basins, Colorado