- Oregon State University. Extension Service441
- Miles, Stanley3
- Oregon State Agricultural College. Agricultural Experiment Station2
- Coppedge, Robert O.1
- Cornelius, James C. (James Conley)1
- Hurd, Edgar Blake, 1899 1
- Judkins, David H.1
- Kearns, Richard S.1
- Miles, Stanley D.1
- Oregon State University. Agricultural Experiment Station1
- Oregon State University. Cooperative Extension Service1
- Pacific Northwest Forest Experiment Station (Portland, Or.)1
- Scudder, H. D. (Henry Desborough), 1881 1
- Wilson, Sinclair Albert, B. 18881