- Oregon State University. Agricultural Experiment Station18
- Mack, H. J.9
- Frazier, W. A.8
- Baggett, James R.7
- Crowell, H. H.6
- Duncan, Andrew A.5
- Oregon State College. Agricultural Experiment Station5
- Jackson, T. L. (Thomas Lloyd), 1922 4
- Mack, H. J. (Harry John), 1926 4
- Davis, G. B.3
- Frazier, W. A. (William Allen), 1908 3
- Mansour, N. S.3
- Mcwhorter, Frank, 1896 19853
- Morrison, H. E.3
- Sistrunk, W. A.3
- Vaughan, E. K.3
- Vaughan, Edward K.3
- Bullock, Richard M. (Richard Melvin), 1918 2
- Davis, John Emerson.2
- Dickmann, F. H. J.2