- United States. Forest Service. Northern Region. State & Private Forestry37
- Mcgregor, Mark D.22
- Hamel, Dennis R.12
- Dooling, Oscar J.9
- Gibson, Kenneth E.8
- Bennett, D. D.7
- Oakes, Robert D.5
- Meyer, Hubert E.3
- United States. Forest Service. Northern Region3
- United States. Forest Service. Northern Region. Forest Environmental Protection3
- Bousfield, Wayne E.2
- Carlson, Clinton E.2
- Eder, Robert G.2
- United States. Forest Service. Northern Region. Forest Insect And Disease Management2
- Bollenbacher, Barry1
- Bortz, Joseph D.1
- Hammer, William P.1
- Hothem, R.1
- Johnson, Ralph R.1
- Kohler, Scott1