- Oregon State University. Agricultural Experiment Station365
- Oregon Agricultural College. Experiment Station112
- Oregon State College. Agricultural Experiment Station103
- Baggett, James R.58
- Oregon State College. Extension Service49
- Oregon Agricultural Experiment Station45
- Mack, H. J.39
- Frazier, W. A.29
- Oregon State University. Malheur Experiment Station29
- Oregon State Agricultural College. Agricultural Experiment Station26
- Columbia Basin Agricultural Research Center22
- Oregon State College. Federal Cooperative Extension Service22
- United States. Agricultural Research Service22
- Shaw, J. N. (James Niven), 1890 21
- Central Oregon Agricultural Research Center17
- Lewis, C. I. (Claude Isaac), 1880 192417
- Mansour, N. S.17
- Crowell, H. H.16
- Pacific Northwest Cooperative Extension15
- Varseveld, George15