Collection
- General Map collection, 1800 - 2023, bulk 1800-20231
- George Langford collection, 1941-2003, Date acquired: 12/17/1997, Date accessioned: 2020-04-09, bulk 1941-19541
- George R. Caron Collection, 1941-2003, Date acquired: 07/01/20041
- George and Hazel Barbour papers, 1942-2003, Date acquired: 02/04/2002, bulk 1941-19461
- Gerald A. Notaro collection of St. Petersburg Pride Archives, 2003-20091
- Giunta family papers, 1920-2011, Date acquired: 00/00/20111
- Glenn "Marty" Stein Collection of Cartoon Art, 1955-2013, bulk 1970-20131
- Glenn Coppock Collection, 1949-20071
- Glenn Edward McDuffie collection, 1943-2014, Date accessioned: 2021-02-031
- Graham Salisbury literature collection, 1988-2004, Date acquired: 04/00/00151
- H. Trevor Colbourn Oral History collection, 1987-2006, bulk 1991-20021
- Haas-Kaywell collection of Young Adult materials, 1984-2018, Date acquired: 02/12/20141
- Haines City Citrus Growers Cooperative, 1956-20221
- Hal Turner, Jr. Collection, 1930-20151
- Harold L. Glasser Collection, 1918-2007, Date acquired: 01/06/20111
- Harry Harrison collection, 1964-2004, Date acquired: 00/00/20031
- Harry Robinson Bird Migration Studies, Florida, 1998-2017, Date acquired: 09/28/20161
- Hazel Louis Bowman collection, bulk 1930-19481
- Helen E. Walsh Collection, 1942-2004, Date acquired: 06/14/2004, bulk 1942-19451
- Helen Gordon Davis collection, 1976-2004, Date acquired: 01/00/1996, bulk 1976-19921