Unrug, Raphael, William I. Ausich, Jolanta Bednarczyk, Roger J. Cuffey, Bernar L. Mamet, Steven L. Palmes, and Sophia Unrug. "Paleozoic Age of the Walden Creek Group, Ocoee Supergroup, in the Western Blue Ridge, Southern Appalachians: Implications for Evolution of the Appalachian Margin of Laurentia." Geological Society of America Bulletin 112, no. 7 (2000): 982-996.

Unrug, Raphael, and Sophia Unrug. "Paleontological Evidence of Paleozoic Age for the Walden Creek Group, Ocoee Supergroup, Tennessee." Geology 18, no. 11 (1990): 1041-1045.

Laurence, Robert A., and A. R. Palmer. "Age of the Murray Shale and Hesse Quartzite on Chilhowee Mountain, Blount County, Tennessee." In Short Paper in Geology and Hydrology Aricles 60-121, C53-C54. Geological Survey Professional Paper 475-C. Wasington, D.C.: U.S. Government Printing Office, 1963.

Cain, Stanley A., and Louise G. Cain. "Size-Frequency Study of Pinus Palustris Pollen." Ecology 25, no. 2 (1944): 229-232.