- Oregon State University. Agricultural Experiment Station64
- Southern Oregon Agricultural Experiment Station37
- Westigard, Peter H.31
- Oregon State University. Malheur Experiment Station19
- Oregon State Agricultural College9
- Oregon State Agricultural College. Experiment Station9
- Oregon State College. Agricultural Experiment Station9
- Oregon Agricultural College. Experiment Station8
- Vanbuskirk, Philip8
- Besse, Ralph S. (Ralph Stephen), 1887 7
- Gonzalves, Pete4
- Hilton, Richard J.4
- Klamath County (Or.)4
- Oregon State University. Klamath Agricultural Experiment Station4
- Bailey, Sam H.3
- Gish, Norville R.3
- Oregon State Agricultural College. Agricultural Experiment Station3
- Sugar, David2
- Willet, M. J.2
- Allen, Robert1