1. Historic trail map of the Leadville 1⁰ x 2⁰ quadrangle, central Colorado Author/Creator: Geological Survey (U.S.) Publication/Creation: [Reston, Va.] : U.S. Geological Survey ; Denver, CO : For sale by USGS Geological Services, 2004 Format: Map Access & Availability: Loading
2. Geologic map of the Clifton House quadrangle, showing fossil zones in the Pierre Shale, Colfax County, New Mexico Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Format: Map Access & Availability: Loading
3. Geologic and structure-contour map of the Raton 30ʹ x 60ʹ quadrangle, Colfax and Union counties, New Mexico, and Las Animas County, Colorado Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Format: Map Access & Availability: Loading
4. Historic trail map of the Greeley 1⁰ x 2⁰ quadrangle, Colorado and Wyoming Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Format: Map Access & Availability: Loading
5. The Buffalo Peaks Andesite of central Colorado : a restudy and adoption of a formal name for the andesite that was the subject of Bulletin 1 of the U.S. Geological Survey Author/Creator: Sanders, George F., author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1976 Format: Book Access & Availability: Loading
6. The Buffalo Peaks Andesite of central Colorado : a restudy and adoption of a formal name for the andesite that was the subject of Bulletin 1 of the U.S. Geological Survey Author/Creator: Sanders, George F. Publication/Creation: Washington : U.S. Govt. Print. Off., 1976 Format: Book Is Part Of: U.S. Geological Survey bulletin, no. 1402-1405. Access & Availability: Loading
7. Stratigraphy and ammonite fauna of the graneros shale and greenhorn limestone near Pueblo, Colorado Author/Creator: Cobban, William A., 1916-2015, author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1972 Format: Book Access & Availability: Loading
8. Stratigraphy and ammonite fauna of the graneros shale and greenhorn limestone near Pueblo, Colorado, Author/Creator: Cobban, William A., 1916-2015 Publication/Creation: Washington : U.S. Govt. Print. Off, 1972 Format: Book Is Part Of: U.S. Geological Survey professional paper, no. 645-649. Access & Availability: Loading
9. General and engineering geology of the United States Air Force Academy site, Colorado Author/Creator: Varnes, David J. 1919- (David Joseph), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1967 Format: Book Access & Availability: Loading
10. General and engineering geology of the United States Air Force Academy site, Colorado, Author/Creator: Varnes, David J. 1919- (David Joseph) Publication/Creation: Washington : U.S. Govt. Print. Off, 1967 Format: Book Is Part Of: U.S. Geological Survey professional paper, no. 551-554. Access & Availability: Loading