1. Department of Fish and Wildlife Conservation, Virginia Polytechnic Institute and State University, 149 Cheatham Hall, 310 West Campus Drive, Blacksburg, VA 24061.
2. Ohio River Islands National Wildlife Refuge, US Fish and Wildlife Service, 3982 Waverly Road, Williamstown, WV 26187.
3. US Army Garrison Fort Belvoir, Directorate of Public Works: Environmental Division, 9430 Jackson Loop, Fort Belvoir, VA 22060.
4. US Geological Survey, Virginia Cooperative Fish and Wildlife Research Unit, 106 Cheatham Hall, 310 West Campus Drive, Blacksburg, VA 24061.