Creator
- Hogberg, Rudolph K.3
- Leverett, Frank, 1859-19433
- Machamer, J.F.3
- Nathan, H.D. (Geologist)3
- Palen, Barbara M.3
- Sloan, Robert E. (Robert Evan), 1929-3
- Stone, J. E. (John Elmer), 1931-3
- Winchell, Horace V. (Horace Vaughn), 1865-19233
- Aronow, Saul, 1923-2
- Gran, S.E.2
- Green, Jeffery A.2
- Griffin, William L.2
- Gruner, John W. (John Walter), 1890-2
- Heutmaker, J.F.2
- Ikola, R.J.2
- Isaacs, Patricia2
- Jerde, E.A.2
- Lehr, J.D.2
- Little, R. L. (Geologist)2
- McSwiggen, Peter L.2