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Recipient
- Finley, William L. (William Lovell), 1876-1953 2
- Worcester, H. M. 2
- Bell, W. B. (William Bonar), 1877-1949 1
- Fugate, A. 1
- Ickes, Harold L. (Harold LeClair), 1874-1952 1
- Mead, Elwood, 1858-1936 1
- Schmitt, F. E. 1
- United States Reclamation Service 1
- United States. Bureau of Biological Survey 1
- United States. Department of the Interior 1
- Waddell, N. F. 1
- Young, Stanley Paul, 1889-1969 1
