OF-06-05 Geologic Map of the Mount Pittsburg Quadrangle OF-06-05 Geologic Map of the Mount Pittsburg Quadrangle, El Paso, Pueblo, and Fremont Counties, Colorado
OF-06-06 Geologic Map of the Palmer Lake Quadrangle OF-06-06 Geologic Map of the Palmer Lake Quadrangle, El Paso County, Colorado
OF-06-08 Geologic Map of the Russellville Gulch Quadrangle OF-06-08 Geologic Map of the Russellville Gulch Quadrangle, Douglas and Elbert Counties, Colorado
OF-06-07 Geologic Map of the Fairplay West Quadrangle OF-06-07 Geologic Map of the Fairplay West 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-05-06 Geologic Map of the Sedalia Quadrangle OF-05-06 Geologic Map of the Sedalia Quadrangle, Douglas County, 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
OF-04-03 Geologic Map of the Alma Quadrangle OF-04-03 Geologic Map of the Alma Quadrangle, Park and Summit Counties, Colorado
OF-03-20 Geologic Map of the Copper Mountain Quadrangle OF-03-20 Geologic Map of the Copper Mountain Quadrangle, Summit, Eagle, Lake, and Park 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