- Oregon. State Game Commission47
- Oregon State College. Agricultural Experiment Station33
- Oregon State College. Extension Service16
- Oregon State College. Federal Cooperative Extension Service11
- Mumford, D. Curtis (Dwight Curtis), 1900 9
- Davis, George B. (George Balfour), 1915 8
- Forest Products Laboratory (U.S.)5
- Wilster, G. H. (Gustav Hans), 18935
- Oregon State College. Engineering Experiment Station4
- Pacific Northwest Forest And Range Experiment Station (Portland, Or.)4
- Bouquet, A. G. B. (Arthur George Bristow), 1885 3
- Gray, K. W. (Kenneth Wiesner), 1905 3
- Jones, I. R. (Idwal Ralph), 1898 3
- Merryfield, Fred, 1900 3
- Mote, Don C. (Don Carlos), 1887 3
- Anderson, Ernest Clifford2
- Boller, Kenneth H.2
- Davis, E. M. (Edward Manning), 1891 2
- Dimick, Roland Eugene, 1900 2
- Haag, J. R. (Joseph Roy), 1896 2