OF-15-12 Geologic Map of the Piney Creek Quadrangle OF-15-12 Geologic Map of the Piney Creek Quadrangle, Arapahoe, Douglas, and Elbert Counties, Colorado
OF-14-07 Geologic Map of the Watkins SE Quadrangle OF-14-07 Geologic Map of the Watkins SE Quadrangle, Arapahoe and Elbert Counties, Colorado
OF-12-05 Geologic Map of the Falcon Quadrangle OF-12-05 Geologic Map of the Falcon Quadrangle, El Paso County, Colorado
OF-02-08 Soil and Bedrock Conditions and Construction Considerations OF-02-08 Soil and Bedrock Conditions and Construction Considerations, North-Central Douglas County, Colorado
OF-01-02 Geologic Map of the Gibson Gulch Quadrangle OF-01-02 Geologic Map of the Gibson Gulch Quadrangle, Garfield County, Colorado