- Forest Products Laboratory (U.S.)273
- Oregon State College. Federal Cooperative Extension Service224
- Oregon State College. Agricultural Experiment Station220
- Oregon. State Game Commission56
- Pacific Northwest Forest And Range Experiment Station (Portland, Or.)34
- Mumford, D. Curtis (Dwight Curtis), 1900 33
- Jackman, E. R. (Edwin Russell), 1894 32
- Jenkins, Lawrence31
- Oregon State College. Extension Service30
- Oregon. Fish Commission27
- Bouquet, A. G. B. (Arthur George Bristow), 1885 25
- Breithaupt, L. R. (Le Roy), 1886 24
- Oregon State College. Engineering Experiment Station24
- Fobes, E. W.20
- Oregon State College. Federal Cooperative Extension Service20
- Cowgill, Helen Julia16
- Jones, I. R. (Idwal Ralph), 1898 15
- Marriage, Lowell D.15
- Tollefson, Roger15
- Wilster, G. H. (Gustav Hans), 189315