- Oregon State University. Extension Service8
- Youngberg, Harold Wayne, 1929 6
- Chilcote, David O.4
- Oregon State University. Cooperative Extension Service4
- Conklin, Frank S.2
- Oregon State College. Agricultural Experiment Station2
- Oregon State College. Federal Cooperative Extension Service2
- Oregon State University. Agricultural Experiment Station2
- Silberstein, Thomas B.2
- Young, William C. (William Clyde)2
- Breithaupt, L. R. (Le Roy), 1886 1
- Brown, William G. (William Galen)1
- Coppedge, Robert O.1
- Davis, George B. (George Balfour), 1915 1
- Dreves, Amy J.1
- Fisher, Glenn C.1
- Grabe, Don F.1
- Greene, Charles H. (Charles Henry), 1932 1
- Hepworth, Homer M.1
- Jackson, T. L. (Thomas Lloyd), 1922 1