Collection
- Jean Allen Battle Research collection, 1919-1989, Date acquired: 00/00/19921
- Jean Crosby Olsen collection, 1937-2007, Date acquired: 06/19/20121
- Jean Trebbi ABC Book Collection, 1852-20091
- Jim Davis papers, 1988-2007, Date acquired: 11/30/20061
- Jim and Betty Lou Joanos Collection, 1909-1957, bulk 1952-19571
- Joe Knetsch papers, 1992-20081
- Joe Louis Reliford Collection, 1952-20031
- Joel Strack papers, 1989-20191
- John B. Sozzio papers, 1944-2002, bulk 1944-19451
- John Carpenter collection, 1957-2018, Date acquired: 00/00/20181
- John F. Cawley Collection, 1944-2010, Date acquired: 06/19/00091
- John L. Ducker Collection, 1863-20071
- John L. Haynes collection, 1945-2007, Date acquired: 05/21/2007, bulk 2003-20071
- John MacKay Shaw Collection, 1737-20071
- Joil (Saul) Alpern transcript, 1940-2009, Date acquired: 02/27/20091
- Jose M. Colon Collection, 1945-20101
- Joseph G. Moretti collection, 1941-2000, Date acquired: 2000-03-201
- Joseph Jennings transcript, 1922-2008, Date acquired: 12/07/2001, bulk 1941-19451
- Joseph L. Cittadini collection, 1943-2005, Date acquired: 10/22/2004, bulk 19441
- Joseph Tobias Papers, 1955-1960, 1990-2005, Date acquired: 02/13/2017, bulk 1955-19601