1. USDA Forest Service, Mount Hood National Forest, Sandy, Oregon 97055
2. USDA Forest Service, Pacific Northwest Research Station, 3200 SW Jefferson Way, Corvallis, Oregon 97331
3. USDA Forest Service, Willamette National Forest, 3106 Pierce Parkway, Suite D, Springfield, Oregon 97477
4. USDA Forest Service, Pacific Northwest Region, 3200 SW Jefferson Way, Corvallis, Oregon 97331