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Author
- Geological Survey (U.S.)102
- Thaden, Robert E., 1924-4
- Geological Survey (U.S.). Geologic Division3
- Hansen, Wallace R., 1920-3
- Snyder, George L. (George Leonard), 1927-3
- Carr, Wilfred James, 1926-2
- Denson, N. M. (Norman MacLaren), 1914-2
- Drewes, Harald, 1927-2
- Nelson, Gordon L. (Gordon Leonard), 1943-2
- AAA Engineering and Drafting1
- Campbell, Kerry J.1
- Gable, Dolores J., 1922-1
- Hardyman, Richard F.1
- Klassen, R. W.1
- Lindvall, Robert M. (Robert Marcus), 1916-1
- Oriel, Steven S.1
- Patton, William Wallace, 1923-1
- Peck, Dallas L. (Dallas Lynn), 1929-1
- Pennsylvania. Bureau of Topographic and Geologic Survey1
- Price, Don, 1929-1
