- Jackson, T. L. (Thomas Lloyd), 1922 77
- Gardner, Ernest Hugh31
- Oregon State University. Extension Service22
- Mack, H. J. (Harry John), 1926 16
- Oregon State University. Agricultural Experiment Station12
- Mansour, N. S.9
- Doerge, Thomas A.7
- Mcguire, William S.7
- Christensen, Neil Walter, 1944 5
- Oregon State College. Agricultural Experiment Station5
- Youngberg, Harold Wayne, 1929 5
- Frazier, W. A. (William Allen), 1908 4
- Fitch, Luther3
- Goetze, Norman R. (Norman Richard)3
- Mcdermid, J. T. (Jack Thomas)3
- Oregon State College. Federal Cooperative Extension Service3
- Powelson, R. L.3
- Rampton, H. H. (Henry Hardy), 1904 3
- Sheets, W. A. (Willis Arden)3
- Yungen, John A. (John Alfred)3