- Oregon State University. Extension Service62
- Oregon State College. Federal Cooperative Extension Service23
- Oregon State University. Cooperative Extension Service13
- Cowgill, Helen Julia10
- Oregon State College. Federal Cooperative Extension Service10
- Johnson, Duane P.8
- Scales, Murle7
- Boldt, Bill6
- Osis, Vicki5
- Sawer, Barbara J.5
- Bourdeau, Virginia4
- Gillen, Winnifred K.4
- Lewis, Margaret4
- Boldt, Genene3
- Franklin, Mary F.3
- Pacific Northwest Cooperative Extension3
- Schrumpf, Elaine3
- Straatman, Marcelle3
- Vandehey, Norbert3
- Washington State University. Cooperative Extension3