Collection
- Michael Hirsh manuscript collection, 1970-2010, Date acquired: 00/00/20101
- Michael Shaara Collection, Circa 1947-19901
- Mike Resnick collection, 1980-2000, Date acquired: 06/00/19951
- 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
- Morton Gold Collection, 1924-2012, Date acquired: 00/00/2009, bulk 1970-20121
- Mu Mu (Phi Theta Kappa Honors Society), 1962-20031
- Museum of Contemporary Art Jacksonville Collection, 1977-20101
- NASA Ephemera collection, 1969-2006, bulk 1980-19941
- NASA Information for the Press, 1981-20021
- NASA Photographs collection, 1962-20011
- Nana Sarpong Book Collection, 1967-20021
- Natalia Grauer Rosenwald transcript, 1939-2004, Date acquired: 08/13/2004, bulk 1939-19451
- Nathan Lupu Collection, 1906-20001
- Nathaniel Glover, Jr. Papers, 1970-20091
- Neulander Magazine Collection, 1882-2002, Date acquired: 12/11/1968, bulk 1920-1929; 1950-19791
- Norman Jones, Jr., Black Heritage collection, bulk 1960s-2000s1
- Norval Vernon Cummings manuscript, 1925-2003, Date acquired: 2017-08-23, bulk 1943-19461
- Odette W. Patterson collection, bulk 1914-20101
- Office of the President -- Dr. Anthony J. Catanese Photograph Collection, 1990-2003, Date acquired: 01/01/1990, bulk 1990-20031