OF-07-01 Geologic Map of the Olathe Quadrangle OF-07-01 Geologic Map of the Olathe Quadrangle, Montrose County, Colorado
OF-07-02 Geologic Map of the Montrose East Quadrangle OF-07-02 Geologic Map of the Montrose East Quadrangle, Montrose County, Colorado
OF-05-03 Geologic Map of the Southern Half of the Culebra Peak Quadrangle OF-05-03 Geologic Map of the Southern Half of the Culebra Peak Quadrangle, Costilla and Las Animas Counties, 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-02-01 Geologic Map of the Hermosa Quadrangle OF-02-01 Geologic Map of the Hermosa Quadrangle, La Plata County, Colorado
OF-00-04 Geologic Map of the Hesperus Quadrangle OF-00-04 Geologic Map of the Hesperus Quadrangle, La Plata and Montezuma Counties, Colorado
OF-99-04 Geologic Map of the Durango West Quadrangle OF-99-04 Geologic Map of the Durango West Quadrangle, La Plata County, Colorado
OF-99-06 Geologic Map of the Durango East Quadrangle OF-99-06 Geologic Map of the Durango East Quadrangle, La Plata County, Colorado
OF-99-07 Geologic Map of the Mt. Sopris Quadrangle OF-99-07 Geologic Map of the Mt. Sopris Quadrangle, Garfield and Pitkin Counties, Colorado
OF-98-02 Geologic Map of the Ludwig Mountain Quadrangle OF-98-02 Geologic Map of the Ludwig Mountain Quadrangle, La Plata County, Colorado
OF-98-03 Geologic Map of the Leon Quadrangle OF-98-03 Geologic Map of the Leon Quadrangle, Eagle and Garfield Counties, Colorado
OF-97-01 Geologic Map of the Rules Hill Quadrangle OF-97-01 Geologic Map of the Rules Hill Quadrangle, La Plata County, Colorado