- Oregon State College. Extension Service2
- Clark, R. T. (Richard Turnbull), 1902 19651
- Klamath County (Or.)1
- Lake County (Or.)1
- Long Range Planning Conference (1927 : Klamath County, Or.)1
- Long Range Planning Conference (1947 : Lake County, Or.)1
- Mccorkle, W. R.1
- Moeller, F. W.1
- Oregon Agricultural College1
- Oregon State Agricultural College. Agricultural Experiment Station1
- Oregon State College. Federal Cooperative Extension Service1
- Oregon State University. Agricultural Experiment Station1
- Oregon State University. Department Of Horticulture1
- Riddle, L. L.1
- Roberts, Alfred Nathan, 1917 1
- Stang, J. R.1
- Wang, Y. T.1