- Oregon State College. Federal Cooperative Extension Service46
- Cowgill, Helen Julia32
- Oregon State College. Federal Cooperative Extension Service32
- Oregon State University. Extension Service24
- Oregon State University. Cooperative Extension Service23
- Johnson, Duane P.10
- Franklin, Mary F.7
- Oregon State Agricultural College. Extension Service7
- Scales, Murle7
- Johnson, Theta6
- Landers, John H.6
- Gillen, Winnifred K.4
- Carlson, Elaine K.3
- Case, Lucy A.3
- Pacific Northwest Cooperative Extension3
- Brasher, Ruth E.2
- Brown, Lawrence L.2
- Carter, Myrtle Miller2
- Cleveland, George W.2
- Minnick, Kenneth C.2