Incoming Resources
- U.S. Environmental Protection Agency, Tennessee Valley Authority, Washington, D.C, Norris, Tenn., 1997
- Smithsonian Institution Press, Washington, D.C, 1981
- National Geographic, Washington, D.C, 2011
- Smithsonian/Folkways, Washington, D.C, p1995
- National Geographic Kids, Washington, D.C, 2018