- Oregon State University17
- Osc Oregon Forestry Alumni Association4
- Osu Forestry Alumni Association4
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club4
- Forest Products Laboratory (U.S.)3
- Oregon Agricultural College. Alumni Association3
- Oregon State University. College Of Forestry3
- Teesdale, L. V. (Laurence Victor)3
- Ballard, Frank Llewellyn2
- Boncoeur, Jean2
- Brandt, Patricia A.2
- Brown, George2
- Christensen, Terry M.2
- Clark, Chapin D.2
- Lavisse, Elodie2
- Le Direach, Laurence2
- Moreno, Joel T.2
- Oregon Agricultural College2
- Oregon State University. Extension Service2
- Osu Oregon Forestry Alumni Association2