- Oregon State College. Extension Service12
- Oregon State Agricultural College. Agricultural Experiment Station10
- Oregon State College. Agricultural Experiment Station8
- Besse, Ralph S. (Ralph Stephen), 1887 5
- Oregon State College. Federal Cooperative Extension Service4
- Zeller, S. M. (Sanford Myron), 1885 19484
- Mcwhorter, O. T.3
- Brown, W. S. (Walter Sheldon), 1878 2
- Edwards, W. D. (William Donald), 1904 2
- Mote, Don C. (Don Carlos), 1887 2
- Nelson, Milton Nels, 1891 2
- Powers, W. L. (Wilbur Louis), 18872
- Sulerud, George L. (George Leslie), 1900 2
- Appleton, John B. (John Bargate)1
- Ballard, Frank Llewellyn1
- Childs, Leroy, 1888 1
- Clackamas County (Or.)1
- Clatsop County (Or.)1
- Coos County (Or.)1
- Cyrus, Wm. F.1