- Youngberg, Harold Wayne, 1929 57
- Oregon State University. Extension Service50
- Chilcote, David O.13
- Mcguire, William S.8
- Hannaway, D. B.7
- Young, William C. (William Clyde)7
- Gardner, Ernest Hugh5
- Jackson, T. L. (Thomas Lloyd), 1922 5
- University Of Idaho. Agricultural Extension Service4
- Warren, Rex4
- Washington State University. Extension Service4
- Adams, H. P. (Holyoke Purinton), 1922 3
- Doerge, Thomas A.3
- Oregon State University. Agricultural Experiment Station3
- Vough, Lester Ray, 1944 3
- Cook, Ronald Lawrence2
- Grabe, Don F.2
- Hickerson, Hugh2
- Albeke, D.1
- Besse, Steve1