OF-07-06 Geologic Map of the Garo Quadrangle OF-07-06 Geologic Map of the Garo Quadrangle, Park County, Colorado
OF-07-01 Geologic Map of the Olathe Quadrangle OF-07-01 Geologic Map of the Olathe Quadrangle, Montrose County, Colorado
OF-06-09 Geologic Map of the Fairplay East Quadrangle OF-06-09 Geologic Map of the Fairplay East Quadrangle, Park County, Colorado
OF-04-07 Geologic Map of the Dawson Butte Quadrangle OF-04-07 Geologic Map of the Dawson Butte Quadrangle, Douglas County, Colorado
OF-04-06 Geologic Map of the Cherry Valley School Quadrangle OF-04-06 Geologic Map of the Cherry Valley School Quadrangle, Elbert, Douglas, and El Paso Counties, Colorado
OF-04-05 Geologic Map of the Castle Rock South Quadrangle OF-04-05 Geologic Map of the Castle Rock South Quadrangle, Douglas County, Colorado
OF-04-09 Geologic Map of the Vallecito Reservoir Quadrangle OF-04-09 Geologic Map of the Vallecito Reservoir Quadrangle, La Plata County, Colorado
OF-03-08 Geologic Map of Falcon NW Quadrangle OF-03-08 Geologic Map of Falcon NW Quadrangle, El Paso 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