OF-03-08 Geologic Map of Falcon NW Quadrangle OF-03-08 Geologic Map of Falcon NW Quadrangle, El Paso County, Colorado
OF-02-04 Geologic Map of the Monument Quadrangle OF-02-04 Geologic Map of the Monument Quadrangle, El Paso County, Colorado
OF-01-03 Geologic Map of the Pikeview Quadrangle OF-01-03 Geologic Map of the Pikeview Quadrangle, El Paso 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-96-02 Geologic Map of the Center Mountain Quadrangle OF-96-02 Geologic Map of the Center Mountain Quadrangle, Garfield County, Colorado
IS-32 Coalbed Methane Development in Colorado IS-32 Coalbed Methane Development in Colorado, September 1990
MS-15 Map and Discovery of Permitted Colorado Coal Mines MS-15 Map and Discovery of Permitted Colorado Coal Mines, 1981