Does anybody recognize the fraternity badge in McCollum's picture?
http://www.lib.usm.edu/~archives/m295.htm
"A published copy of The Diary of Captain Duncan McCollum, Co. A, 4th Mississippi Cavalry 1865 by J.K. McCollum, Sr. and J.K. McCollum, Jr. (San Bernardino, Calif.: J.K. McCollum Sr. and Jr., 1964) is available in the McCain Library, call number E568.6 4th .M3 1964x."