- Oregon State College. Agricultural Experiment Station45
- Oregon State University. Extension Service43
- Oregon State University. Agricultural Experiment Station28
- Jones, I. R. (Idwal Ralph), 1898 17
- Potter, E. L. (Ermine Lawrence), 1884 15
- Oregon Agricultural College. Experiment Station13
- Bogart, Ralph, 1908 11
- Adams, H. P. (Holyoke Purinton), 1922 10
- Oregon Agricultural Experiment Station10
- Gamroth, Michael J.9
- Oregon State Agricultural College. Agricultural Experiment Station9
- Withycombe, Robert, 1880 9
- Brandt, P. M. (Philip Martin), 1888 6
- Ewalt, H. P.6
- French, H. T. (Hiram Taylor), 1862 6
- Frischknecht, W. Dean6
- Hoffman, E. N.6
- Pirelli, Gene J.6
- Krueger, Hugo (Hugo Martin), 1902 5
- Oldfield, J. E., 1921 5