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-04-08 Geological Map of the La Valley Quadrangle OF-04-08 Geological Map of the La Valley Quadrangle, Costilla County, Colorado
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-01-04 Geologic Map of the Basin Mountain Quadrangle OF-01-04 Geologic Map of the Basin Mountain 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-03-15 Geologic map of the Taylor Ranch Quadrangle OF-03-15 Geologic map of the Taylor Ranch Quadrangle, Costilla County, Colorado
OF-02-04 Geologic Map of the Monument Quadrangle OF-02-04 Geologic Map of the Monument Quadrangle, El Paso County, Colorado
OF-02-06 Geologic Map of the Fort Garland SW Quadrangle OF-02-06 Geologic Map of the Fort Garland SW Quadrangle, Costilla County, Colorado
OF-02-07 Geologic Map of the Breckenridge Quadrangle OF-02-07 Geologic Map of the Breckenridge Quadrangle, Summit and Park 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-99-13 Active Surficial-Geologic Processes and Related Geologic Hazards in Georgetown OF-99-13 Active Surficial-Geologic Processes and Related Geologic Hazards in Georgetown, Clear Creek County, Colorado