- Oregon State University. Extension Service62
- United States. Agricultural Research Service35
- Hart, John M. (John Mervyn), 1947 33
- Oregon State University. Department Of Crop Science32
- Oregon State University. Agricultural Experiment Station31
- Jackson, T. L. (Thomas Lloyd), 1922 25
- Young, William C.20
- Gardner, Ernest Hugh18
- Horneck, Donald Arthur13
- Mellbye, Mark Edward12
- Oregon State College. Agricultural Experiment Station12
- Youngberg, Harold Wayne, 1929 12
- Young, William C. (William Clyde)11
- Christensen, Neil Walter, 1944 10
- Pumphrey, F. V. (Floyd Vance)10
- Mack, H. J.9
- Youngberg, Harold W.9
- Mack, H. J. (Harry John), 1926 8
- Oregon Agricultural College. Experiment Station8
- Lutcher, L. K. (Lawrence K.)7