- Oregon State University. Extension Service46
- Oregon State College. Agricultural Experiment Station11
- Oregon State University. Agricultural Experiment Station11
- Holroyd, Michael H.8
- Hart, John M. (John Mervyn), 1947 7
- Fincke, Margaret Louise, 1900 6
- Lewis, Margaret6
- Pacific Northwest Cooperative Extension6
- Adams, H. P. (Holyoke Purinton), 1922 5
- Hoppe, Gertrude5
- Lewis, Margaret J.5
- Lorenz, Bonnie A.5
- Nickelson, Thomas E.5
- Powers, W. L. (Wilbur Louis), 18875
- University Of Idaho. Cooperative Extension Service5
- Washington State University. Cooperative Extension5
- Delgado, Joy4
- Haag, J. R. (Joseph Roy), 1896 4
- Oregon Agricultural College. Experiment Station4
- Saunders, Ellen4