Collection
- Michael Shaara Collection, Circa 1947-19901
- Monte Allen U.S.S. Kwajalein collection, 1944-2009, Date acquired: 2016-08-03, Date accessioned: 2020-05-13, bulk 19451
- 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
- Museum of Contemporary Art Jacksonville Collection, 1977-20101
- Nathaniel Glover, Jr. Papers, 1970-20091
- Nicholas and Jeanne Baldino transcript, Date accessioned: 2005-04-13, bulk 1943-19461
- Norman Jones, Jr., Black Heritage collection, bulk 1960s-2000s1
- Odette W. Patterson collection, bulk 1914-20101
- Office of the President -- Mr. Frank T. Brogan Photograph Collection, 2003-2009, Date acquired: 01/01/2007, bulk 2003-20091
- Office of the President -- Mr. Frank T. Brogan, 2003-2009, bulk 2003-20041
- Olga Hanlon family collection, 1940-20141
- Oliver Luther Austin Collection, 1945-2013, Date accessioned: 2013-11-13, bulk 1945-19521
- Orlando Gay Chorus collection, 1990-20181
- Orlando Shakespeare Theater Collection, 1974-2013, bulk 1986-20091
- Otis R. Anthony collection, 1977-2009, 2008-11, bulk 1977-19791
- Parsons collection of Peter Demens and the two St. Petersburgs (Florida and Russia), bulk 1890-20051
- Paul and Leonard Gordy collection, 1946-2012, Date acquired: 07/23/2015, Date accessioned: 2020-06-081
- Peter Belmont Preserve the 'Burg Collection, bulk 1980-20201
- Philip Sperling collection, 1942-1946, Date acquired: 2017-06-29, Date accessioned: 2017-07-111