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Neuman, Robert Ballin, Willis H. Nelson, and U.S. Government Printing Office. Geology of the Western Great Smoky Mountains, Tennessee. Washington, D.C.: USGS, 1965.
Hamilton, Warren Bell, Jarvis B. Hadley, Philip Burke King, Robert Ballin Neuman, Richard Goldsmith, and Willis H. Nelson. Geology of the Great Smoky Mountains, Tennessee and North Carolina In U.S. Geological Survey Professional Paper. Washington, D.C.: U.S. Government Printing Office, 1961.