- Oregon State University. Agricultural Experiment Station3
- Oregon State College. Agricultural Experiment Station2
- Oregon State University. Extension Service2
- Breithaupt, L. R. (Le Roy), 1886 1
- Burke, Thomas C.1
- Collin, Theodore1
- Darr, David R.1
- Eisgruber, Ludwig, M.1
- Farrell, John P.1
- Hoffman, C. S. (Charles Sumner)1
- Johnson, Carly1
- Kingry, Larry Kit1
- Koong, Dennis T1
- Korzan, Gerald E. (Gerald Earl)1
- Mandelbaum, Thomas B.1
- Nelson, A. Gene1
- Nimmo, Runey & Co.1
- Norman, D. W. (David W.)1
- Oregon. State Immigration Commission1
- Portland Chamber Of Commerce (Or.). Land Settlement Dept1