- Forest Products Laboratory (U.S.)202
- Oregon State College. Agricultural Experiment Station112
- Oregon State College. Federal Cooperative Extension Service92
- Oregon. State Game Commission39
- Pacific Northwest Forest And Range Experiment Station (Portland, Or.)31
- Oregon State College. Extension Service27
- Oregon. Fish Commission24
- Oregon State College. Engineering Experiment Station22
- Mumford, D. Curtis (Dwight Curtis), 1900 14
- Wilster, G. H. (Gustav Hans), 189314
- Tollefson, Roger13
- Marriage, Lowell D.12
- Breithaupt, L. R. (Le Roy), 1886 11
- Harris, Elwin E.11
- Moravets, F. L.10
- Mcgovern, John Neilson, 1908 9
- Deloach, D. B. (Daniel Barton), 1904 8
- Huber, M. G.8
- Stamm, Alfred J. (Alfred Joaquim), 1897 8
- Bouquet, A. G. B. (Arthur George Bristow), 1885 7