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Recipient
- Bell, W. B. (William Bonar), 1877-1949 2
- Finley, William L. (William Lovell), 1876-1953 2
- Worcester, H. M. 2
- Andrews, Stanley P. 1
- Benjamin, Charles 1
- Darling, Jay N. (Jay Norwood), 1876-1962 1
- Ickes, Harold L. (Harold LeClair), 1874-1952 1
- Lincoln, Frederick Charles, 1892-1960 1
- Raley, J. H. 1
- United States Reclamation Service 1
- United States. Bureau of Biological Survey 1
- United States. Department of the Interior 1
- Waddell, N. F. 1
