1. USDA Forest Service Northern Research Station 271 Mast Rd Durham New Hampshire03824USA
2. Department of Biology University of Florida Gainesville Florida32611USA
3. USDA Forest Service, State and Private Forestry Region 9, 180 Canfield St Morgantown West Virginia26505USA
4. Natural Resources Canada Canadian Forest Service Northern Forestry Centre Edmonton AlbertaT6H 3S5Canada
5. Northeast Forests, LLC PO Box 284 Thendara New York13472USA