- Oregon State College. Agricultural Experiment Station57
- Price, F. E. (Frederick Earl), 1898 6
- Oregon State College. Engineering Experiment Station4
- Cooney, W. T. (Wilbur Tarleton), 1914 3
- Dickinson, E. M. (Ernest Milton), 1905 3
- Mumford, D. Curtis (Dwight Curtis), 1900 3
- Powers, W. L. (Wilbur Louis), 18873
- Shaw, J. N. (James Niven), 1890 3
- Stephenson, R. E. (Roscoe Elmo), 1885 3
- Thomas, Herman la Motte, 1901 3
- Burtner, John C. (John Cole), 1895 2
- Einarsen, Arthur S. (Arthur Skogman), 1897 2
- Haag, J. R. (Joseph Roy), 1896 2
- Harvey, E. W. (Edward Winslow), 1911 2
- Kirk, Dale E. (Dale Earl), B. 19182
- Kuhlman, G. W. (Gustav Wesley), 1894 2
- Lewis, M. R. (Mortimer Reed), 1886 2
- Milbrath, John A., 1909 2
- Miller, P. W. (Paul William), 1901 2
- Mote, Don C. (Don Carlos), 1887 2