OF-06-09 Geologic Map of the Fairplay East Quadrangle OF-06-09 Geologic Map of the Fairplay East Quadrangle, Park County, Colorado
OF-03-19 Geologic Map of the Manitou Springs Quadrangle OF-03-19 Geologic Map of the Manitou Springs Quadrangle, El Paso and Teller Counties, 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-05-04 Geologic Map of the Como Quadrangle OF-05-04 Geologic Map of the Como Quadrangle, Park County, Colorado
OF-05-05 Geologic Map of the Almont Quadrangle OF-05-05 Geologic Map of the Almont Quadrangle, Gunnison County, Colorado
OF-05-06 Geologic Map of the Sedalia Quadrangle OF-05-06 Geologic Map of the Sedalia Quadrangle, Douglas County, Colorado
OF-05-07 Geologic Map of the East Half of the Larkspur Quadrangle OF-05-07 Geologic Map of the East Half of the Larkspur Quadrangle, Douglas and El Paso Counties, Colorado
OF-05-08 Geologic Map of the Buena Vista West Quadrangle OF-05-08 Geologic Map of the Buena Vista West Quadrangle, Chaffee County, Colorado
OF-05-02 Geologic Map of the Castle Rock North Quadrangle OF-05-02 Geologic Map of the Castle Rock North Quadrangle, Douglas County, Colorado