Pvt. Burton A[E]. Renfro, enlisted in Co. H, 48th [Nixon's] Tennessee Infantry November 1, 1862 at
Henryville for a period of 24 months, subscribed to the Oath of Amnesty at Columbia, Tennessee on
January 17, 1865 giving Lawrence Co., Tennessee as his place of residence

See also:

http://home.coastalnow.net/~gakincaid/
http://members.tripod.com/csa48tn/index.htm

Here is what appears to be the only other document related to Nixon's 48th:

Watkins, S.R. "The 'Fighting' Forty-eighth Tennessee Regiment." Southern Bivouac (1883/84): pp. 246-51