- Oregon State College. Agricultural Experiment Station9
- Oregon State University. Agricultural Experiment Station5
- Mumford, D. Curtis (Dwight Curtis), 1900 4
- Oregon State University. Extension Service3
- Youmans, Russell C.3
- Brown, William G. (William Galen)2
- Conklin, Frank S.2
- Davis, George B. (George Balfour), 1915 2
- Oregon State University. Water Resources Research Institute2
- Oregon. Dept. Of Geology And Mineral Industries2
- Oveson, M. M. (Merrill Mahonri), 1900 2
- Sorte, Bruce2
- Bates, Christopher Allen1
- Besse, Ralph S. (Ralph Stephen), 1887 1
- Birch, Kevin R.1
- Boodt, William A.1
- Bregenzer, Neil S.1
- Brown, W. S. (Walter Sheldon), 1878 1
- Buerger, Chris1
- Caldwell, William Elmer, 1903 1