He specializes in various areas, including Southern American History, African-American History and Urban History. Dr. Mixon has published extensively on issues relating to Black America and has contributed articles to books such as Repression and Retaliation: Resistance Movements by African-Americans (Edited by Felton Best, 1995) and The Encyclopedia of African-American Civil Rights From Emancipation to the Present (Edited by Charles Lowery and John F. Marszalek, 1992).