Collection
- Julia Grillion papers, 1878-1938, Date acquired: 00/00/19851
- Julián Peláez del Pozo Papers, 1821-18861
- Justice Glenn Terrell Papers, 1775-1985, Date acquired: 12/00/1992, bulk 1920-19701
- Kathleen Hardee Arsenault literature research collection, 1877-19981
- King-Joyner Family Papers, 1867-1951, Date acquired: 00/00/19931
- Ladd journal and papers, 1848-1887, Date acquired: 07/13/19651
- 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
- Lesley family papers, 1700-1950, bulk 1850-19501
- Levi Marrero Collection, bulk date unknown1
- Lewis Bank papers, 1854-1957, Date acquired: 03/10/1966, bulk 1871-19251
- Lewis S. Moore Collection, 1862-19311
- Lois Deicke Rare Tropical Fruits and Vegetables Book Collection, 1811-19841
- Love-Scarborough Papers, 1835-1936, Date acquired: 05/25/19591
- Loy Glenn Westfall Cigar Industry Research collection, 1860-1982, Date acquired: 00/00/20151
- MacGowan Gift, 1825-1959, Date acquired: 01/01/1968, bulk 1825, 1831, 1928, 19591