OF-12-04 Geologic Map of the Elbert Quadrangle OF-12-04 Geologic Map of the Elbert Quadrangle, Elbert and El Paso Counties, Colorado
OF-11-01 Notes on the Denver Basin Geologic Maps: Bedrock Geology OF-11-01 Notes on the Denver Basin Geologic Maps: Bedrock Geology, Structure, and Isopach Maps of Upper Cretaceous to Paleogene Strata between Greeley and Colorado Springs, Colorado
OF-11-02 Geology of Upper Cretaceous OF-11-02 Geology of Upper Cretaceous, Paleocene and Eocene Strata in the Southwestern Denver Basin, Colorado
OF-11-03 Cross-sections of the Fresh-water-bearing Strata of the Denver Basin between Greeley and Colorado Springs OF-11-03 Cross-sections of the Fresh-water-bearing Strata of the Denver Basin between Greeley and Colorado Springs, Colorado
SP-52 Messages in Stone: Colorado's Colorful Geology (2nd Edition) SP-52 Messages in Stone: Colorado’s Colorful Geology (2nd Edition)
OF-09-03 Geologic Map of the Elizabeth Quadrangle OF-09-03 Geologic Map of the Elizabeth Quadrangle, Elbert County, Colorado
OF-07-04 Geologic Map of the Ponderosa Park Quadrangle OF-07-04 Geologic Map of the Ponderosa Park Quadrangle, Douglas and Elbert Counties, 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-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