1816–60." Ph.D. dissertation, Tulane University, 1966. Fleming, Jo Lee. "James D. Vaughan, Music Publisher." S.M.D. dissertation, Union Theological Seminary (Richmond, VA), 1972. Goff, James R. Jr. Close Harmony: A History Of Southern Gospel. University Of North Carolina Press, 2002. Graves, Michael P. and Fillingim, David. "More than Precious Memories: The Rhetoric of Southern Gospel Music" Mercer University Press, 2004. . Harrison, Douglas. Then Sings My Soul: The Culture of Southern Gospel Music. Urbana Champaign: University of Illinois Press, 2012. Harrison, Douglas. "Why Southern Gospel Music Matters." Journal of Religion and American Culture. 18.1 (2008) pp. 27–58. Terrell, Bob. The Music Men: The Story of Professional Gospel Quartet Singing in America. B. Terrell, 1990. . External links Souther Gospel Music Association (https://www.sgma.org) Gospel music genres