Collection
- Julia Grillion papers, 1878-1938, Date acquired: 00/00/19851
- Julia Linebaugh King papers, 1890-19801
- Justice Glenn Terrell Papers, 1775-1985, Date acquired: 12/00/1992, bulk 1920-19701
- Katherine Moore Morse Collection, 1891 - 2007, bulk 1943 - 19471
- Kathleen Hardee Arsenault literature research collection, 1877-19981
- King-Joyner Family Papers, 1867-1951, Date acquired: 00/00/19931
- Kirkpatrick Kodak Film Camera Collection, bulk 1907-20101
- Kirkpatrick, John A., Papers, 1894-1901, Date acquired: 04/12/19871
- Knight and Wall Hardware Company records, 1884-1992, Date acquired: 00/00/19821
- La Gaceta Spanish Revolutionary War prints, 1900-1910, Date acquired: 08/14/20141
- Ladies Library Association of DeFuniak Springs, Florida, 1887-1962, Date acquired: 00/00/19801
- Latin American ephemeral publications collection, 1861-20091
- Laurence Campbell Papers, 1870-1975, Date acquired: 00/00/19761
- Lawrence G. Abele Collection, 1816-1995, bulk 1960-19891
- Leigh Papers, 1868-1916, Date acquired: 09/00/19801
- Leland Hawes collection, 1982-2004, Date acquired: 00/00/2010, bulk 1982-20041
- Leo Clark Collection, 1841-19211
- Leo Stalnaker papers, 1897-19391
- Lesley family papers, 1700-1950, bulk 1850-19501
- Levi Marrero Collection, bulk date unknown1