- Oregon State College. Agricultural Experiment Station45
- Oregon. State Game Commission13
- Forest Products Laboratory (U.S.)8
- Oregon State College. Engineering Experiment Station7
- Oregon State College. Extension Service7
- Pacific Northwest Forest And Range Experiment Station (Portland, Or.)7
- United States. Forest Service6
- Wilster, G. H. (Gustav Hans), 18936
- Deloach, D. B. (Daniel Barton), 1904 5
- Gorton, W. W. (William Winfield), 1907 5
- Miller, P. W. (Paul William), 1901 5
- Oregon State College. Federal Cooperative Extension Service5
- Dreesen, W. H. (William Henry), 1880 4
- Price, F. E. (Frederick Earl), 1898 4
- Schuster, C. E. (Carl Ephraim), 1889 4
- Heebink, Bruce G.3
- Mumford, D. Curtis (Dwight Curtis), 1900 3
- Oregon. Fish Commission3
- Shaw, J. N. (James Niven), 1890 3
- Bollen, Walter Beno, 1896 2