General and Engineering Geology of the Northern Part of Pueblo, Colorado: Issues 1262-1265

General and Engineering Geology of the United States Air Force Academy Site, Colorado: Issues 551-553

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

Bibliography of Reports Resulting from U.S. Geological Survey Participation in the United States Technical Assistance Program, 1940-67: Issues 1262-1265

Silurian Nomenclature and Correlations in Southwest Virginia and Northeast Tennessee: Establishes a Reference Section for the Clinch Sandstone, Extends the Name Rose Hill Formation to Southwest Virginia and Northernmost Tennessee, and Clarifies the Relations Between the Clinch Sandstone, Rose Hill Formation, and Rockwood Formation, Issues 1402-1405