- Geological Survey (U.S.)2
- Denson, N. M. (Norman MacLaren), 1914-1
- Hansen, Dan E.1
- Johnson, Ross B., 1919-1
- Kottlowski, Frank Edward1
- Sargent, Kenneth A.1
- Stafford, Philip T.1
- Waddell, Courtney1
- Wier, Charles E. (Charles Eugene), 1921-1
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