OF-01-01 Geologic Map of the Castle Rock Gulch Quadrangle OF-01-01 Geologic Map of the Castle Rock Gulch Quadrangle, Chaffee and Park Counties, Colorado
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
MS-30 Basement Structure Map of Colorado with Major Oil and Gas Fields (detail) MS-30 Basement Structure Map of Colorado with Major Oil and Gas Fields