- Oregon Agricultural College. Extension Service4
- Bonnicksen, Leroy W., 1923 3
- Oregon State College. Federal Cooperative Extension Service3
- Huber, M. G.2
- Oregon State College. Agricultural Experiment Station2
- Barr, W. A.1
- Beckwith, T. D.1
- Bouquet, A. G. B. (Arthur George Bristow), 1885 1
- Burgett, Michael1
- Carlson, Thomas J.1
- Graham, R. D.1
- Graves, R. R.1
- Griebeler, W. L.1
- Oregon Agricultural College. Extension Division1
- Oregon State University. College Of Veterinary Medicine1
- Reynolds, Ralph Elmer1
- Samson, George R. (George Roy), 1879 1
- Shearer, Marvin N.1
- Teeter, T. A. H. (Thomas Anderson Hendricks), 1886 1