- Oregon State University. Agricultural Experiment Station288
- Oregon State College. Agricultural Experiment Station38
- Mack, H. J.35
- Oregon State College. Federal Cooperative Extension Service27
- Frazier, W. A.26
- Oregon State University. Federal Cooperative Extension Service24
- Baggett, James R.23
- Crowell, H. H.15
- Duncan, Andrew A.14
- Korzan, Gerald E. (Gerald Earl)14
- Bullock, Richard M. (Richard Melvin), 1918 13
- Duncan, A. A.13
- Jackson, T. L. (Thomas Lloyd), 1922 13
- Castle, Emery N.12
- Crabtree, Garvin Dudley10
- Oldfield, J. E., 1921 10
- Sistrunk, W. A.10
- Vaughan, E. K.10
- Adair, John, 1927 9
- Every, R. W.9