Collection
- Harrison Sayre Circus Collection, 1863-2001, Date acquired: 00/00/2010, bulk 1949-19941
- Henry Simpson papers, 1849-1919, Date acquired: 01/17/19801
- Henry T. Wright letters, 1860-1865, Date acquired: 01/01/20021
- Herman and Ida Herst Collection, 1690-19951
- Hester family collection, 1854-1987, Date acquired: 00/00/19951
- Hillsborough County, court records, 1833-1923, bulk 1893-18971
- Himes family papers, 1856-1994, Date acquired: 09/00/1994, bulk 1912-19941
- Historical Newspaper Collection, 1792-19451
- Historical Newspapers Collection, bulk 1776-20001
- Hodgkiss, Scott, and Company Letterbook, 1865-18661
- Hollingsworth Papers, 1768-1887, 1916, bulk 1788-18871
- Howard, James William, Diary, 1861-1913, Date acquired: 00/00/19821
- J. Floyd Monk Collection, bulk 1826-19991
- J. Paul Hartman Slide Collection, 1605-2006, bulk 1905-19931
- J.A. Falkner Family records, 1831-1907, Date acquired: 06/01/19671
- Jack Wilson collection, 1864-1965, Date acquired: 00/00/1963, bulk 1921-19641
- James L. Marshall Civil War Documents, 1863-18651
- James Patton Anderson Papers, 1862-18651
- James Tillinghast Archer Family Papers, 1843-19691
- James Tillinghast Archer Papers, 1850-1961, Date acquired: 03/20/19681