- Oregon State University. Extension Service373
- Oregon State College. Federal Cooperative Extension Service98
- Oregon State College. Federal Cooperative Extension Service84
- Oregon State University. Cooperative Extension Service57
- Cowgill, Helen Julia42
- Koester, Ardis W.42
- Sawer, Barbara J.41
- Johnson, Duane P.36
- Sander, Gary H.19
- Wilkinson, Ralph19
- Raab, Carolyn A.16
- Boldt, Bill14
- Kelley, Fern S.12
- Pacific Northwest Cooperative Extension11
- Baker, Mary Jean10
- Boltes, Barbara V.10
- Brand, Jean10
- Johnson, Evelyn H.10
- Macpherson, Hector10
- Nelson, Milton N.10