The CW Units File @ http://sunsite.utk.edu/civil-war/warweb.html#rosters
list the following with information on the 48th.

48th (Nixon's) TN Inf., Co B&G 1861-5 PSBF51A@prodigy.com
48th (Nixon's) Tenn. Inf. Reg. gakincaid@coastalnow.net (Gerald Kincaid)

http://pages.prodigy.net/gakincaid/48tenninf.htm
48th (Voohries') Tenn. Inf. Reg. gakincaid@coastalnow.net (Gerald Kincaid)

http://pages.prodigy.net/gakincaid/48tenninf.htm
48th (Voorhies) Infantry, Co A 1861-5 PSBF51A@prodigy.com
48th Voorhies TN Cavalry, Co B 1861-2 PSBF51A@prodigy.com

George Martin