1. Schatz Center for Tree Molecular Genetics, The Pennsylvania State University 327 Forest Resources Building, University Park, Pennsylvania 16802
2. Department of Ecosystem Science and Management, The Pennsylvania State University, University Park, Pennsylvania 16802
3. Schatz Center for Tree Molecular Genetics, The Pennsylvania State University University Park, Pennsylvania 16802
4. Powdermill Nature Reserve, Carnegie Museum of Natural History 1795 Route 381, Rector, Pennsylvania 15677
5. Powdermill Nature Reserve Carnegie Museum of Natural History
6. The Schatz Center for Tree Molecular Genetics, The Pennsylvania State University, 323 Forest Resources Building, University Park, Pennsylvania 16802