- Oregon State University. Agricultural Experiment Station73
- Oregon State College. Extension Service51
- Oregon State College. Agricultural Experiment Station45
- Schuster, C. E. (Carl Ephraim), 1889 34
- Oregon State Agricultural College. Agricultural Experiment Station16
- Oregon State College. Federal Cooperative Extension Service14
- Oregon Agricultural College. Experiment Station13
- Oregon State University. Malheur Experiment Station13
- Columbia Basin Agricultural Research Center9
- United States. Agricultural Research Service8
- Bond, Carl E.7
- Burrier, A. S. (Arnold Stewart), 1902 19387
- O'connor, Carl W.7
- Miller, P. W. (Paul William), 1901 5
- Oregon State Agricultural College. Extension Service5
- Powers, W. L. (Wilbur Louis), 18875
- Beavers, Darrell V.4
- Lane County (Or.)4
- Payne, Carl H.4
- Wilster, G. H. (Gustav Hans), 18934