- Oregon State University. Agricultural Experiment Station204
- Oregon State College. Extension Service69
- Oregon State College. Agricultural Experiment Station61
- Oregon State Agricultural College. Extension Service60
- Oregon Agricultural College. Extension Service57
- Columbia Basin Agricultural Research Center33
- United States. Agricultural Research Service32
- Oregon State College. Federal Cooperative Extension Service25
- Oregon Agricultural College. Experiment Station21
- Oregon State University. Malheur Experiment Station16
- Miller, P. W. (Paul William), 1901 13
- Oregon State Agricultural College. Agricultural Experiment Station13
- Central Oregon Agricultural Research Center12
- Bouquet, A. G. B. (Arthur George Bristow), 1885 10
- Eastern Oregon Agricultural Research Center9
- Schuster, C. E. (Carl Ephraim), 1889 8
- Klamath County (Or.)7
- Mote, Don C. (Don Carlos), 1887 7
- Oregon State University. Extension Service/Marine Advisory Program7
- Potter, E. L. (Ermine Lawrence), 1884 7