1. Division of Forestry and Natural Resources West Virginia University Morgantown West Virginia
2. Northern Research Station USDA Forest Service Madison Wisconsin
3. Department of Geology and Environmental Science University of Pittsburgh Pittsburgh Pennsylvania
4. Division of Plant and Soil Sciences West Virginia University Morgantown West Virginia
5. Department of Geology and Geography West Virginia University Morgantown West Virginia
6. Department of Biology West Virginia University Morgantown West Virginia