- Oregon State College. Extension Service15
- Oregon State Agricultural College. Agricultural Experiment Station10
- Oregon State College. Federal Cooperative Extension Service7
- Oregon State College. Agricultural Experiment Station5
- Oregon State College. Engineering Experiment Station5
- Besse, Ralph S. (Ralph Stephen), 1887 3
- Case, Lucy A.3
- Graf, Samuel Herman, 1887 3
- Nelson, Milton Nels, 1891 3
- Oregon State Agricultural College. Extension Service3
- Sulerud, George L. (George Leslie), 1900 3
- Ballard, Frank Llewellyn2
- Civilian Conservation Corps (U.S.)2
- Dreesen, W. H. (William Henry), 1880 2
- Gleeson, George Walter, 1905 2
- Hoffman, C. S. (Charles Sumner)2
- Jackman, E. R. (Edwin Russell), 1894 2
- Kuhlman, G. W. (Gustav Wesley), 1894 2
- Lindgren, H. A. (Harry Arthur), 1888 2
- Martin, Wallace Hope, 1885 2