- B.C. Ministry of Forests
- Bureau of Land Management
- Cascade Hardwood
- Goodyear-Nelson Hardwood Lumber Company, Inc.
- Port Angeles Hardwood
- Washington Dept. Of Natural Resources
- Washington Hardwood Commission
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Glenn Ahrens
Program Director, Hardwood Silviculture Cooperative
OSU Extension Forester
Clackamas, Marion, and Hood River Counties
200 Warner-Milne Road
Oregon City, OR 97045
Phone: 503-655-8631
Fax: 503-655-8636
E-Mail: Glenn.Ahrens@oregonstate.edu