- Oregon State University. Cooperative Extension Service16
- Washington State University. Cooperative Extension Service[remove]16
- Pacific Northwest Cooperative Extension12
- University Of Idaho. Cooperative Extension Service10
- University Of Idaho. Agricultural Extension Service5
- Lunner, Marilyn2
- Berry, Ralph E. (Ralph Eugene), 1940 1
- Brown, Dorothy F. (Dorothy Furtick)1
- Burridge, Judith Steele1
- Carlson, Elaine K.1
- Fisher, Glenn C.1
- Frasier, Roberta C.1
- Hilderbrand, Kenneth S.1
- Johnston, Alberta B.1
- Newton, Michael, 1932 1
- Pacific Northwest Woodland Publications Committee1
- Pattison, Arlean1
- Robinson, Robert R.1
- Sander, Gary H.1
- Smith, Frederick J.1