Collection
- Lutgert College of Business, 1989-2006, bulk 1998-20021
- Lynn Pippenger collection, 1963-20131
- Mack McElderry Papers, 1963-2004, Date acquired: 10/22/20101
- Marching Chiefs Digital Records, bulk 1957-20071
- Margaret Fisher papers, 1953-1998, Date acquired: 00/00/2002, bulk 1960-19941
- Marieb College of Health and Human Services, 1995-20041
- Marvin Dunn Collection, bulk 1843-20091
- Mary Lou Norwood Collection, 1941-20071
- Mary Monroe Theatre Collection, 1973-2016, bulk 1973-19761
- Mary Pickens Talley Morgan Collection, 1955-2004, Date acquired: 09/11/2010, bulk 1955-19561
- May Ryburn Papers, 1880-2003, bulk 1925-20031
- Melodie Moorehead Papers, 1970-20211
- Melvin R. Bielawski Collection, 1930-2008, Date acquired: 05/12/19981
- Melvin Rackleff collection, 1912-2005, Date acquired: 11/12/1999, bulk 1944-19461
- Michael D. Kolb collection, 1998-2002, Acquired: 03/14/20031
- Michael Hirsh manuscript collection, 1970-2010, Date acquired: 00/00/20101
- Michael Shaara Collection, Circa 1947-19901
- Mildred Hoffenbloom manuscript, January 14, 2002, Date acquired: 05/28/2002, bulk 1942-19451
- Mona Greenberg Magazine Collection, 1968-2004, Date acquired: 03/00/20171
- Morison Buck Biographies of Hillsborough County Judges, 1997-2005, Date acquired: 00/00/20001