Creator
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club20
- Pacific Northwest Forest And Range Experiment Station (Portland, Or.)9
- United States Pacific Northwest Forest And Range Experiment Station (Portland, Or.)2
- Hershey, Kit1
- Johnson, Norman E.1
- Koch, Niels Elers1
- Lee, Robert G.1
- Oregon State University. College Of Forestry1
- Oregon Woodland Publications Council1
- Squire, Ross O.1
- United States. Bureau Of Land Management1
- United States. Forest Service1