- Hackman, Robert J.5
- Tolbert, G. E.3
- Olson, A. B.2
- Bunnag, D.1
- Detterman, J. S.1
- Geological Survey (U.S.)1
- Hansen, Wallace R., 1920-1
- Hemphill, William R. (William Ross), 1930-1
- Marshall, C. H.1
- Minard, James P.1
- Orkild, Paul P.1
- Pomeroy, John S., 1929-1
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