Collection
- Creek Indian Project Records, 1817-1981, Date acquired: 06/00/1981, bulk 1950-19811
- Crispen Nissen papers, 1941-1999, Date acquired: 09/10/1998, bulk 19431
- Cuban Tree Sample Collection, bulk 1900-20001
- Currin, Beverly Madison (Reverend), Papers, 1958-2002, Date acquired: 03/00/20031
- Curtis Davidson Collection, 1938-19891
- Daddy Wayne Koons collection of realia and moving images, 1980-2009, Date acquired: 05/00/20101
- Dae D. Baird, Jr. papers, 1944-2009, Date acquired: 11/20/20091
- Daisy Parker Flory Papers, 1929-1990, Date acquired: 02/00/1994, bulk 1961-19791
- Dale A. Olsen Collection, 1947-2006, bulk 1970-19971
- Daniel M. Johnson Collection, 1788-20021
- David Kirby Rare Book Collection, 1861-20161
- David O. True collection, 1450-1992, Date acquired: 06/00/19801
- David R. Carr collection of political ephemera, bulk 1960s-2000s1
- Degen Playbill Collection, 1895-20231
- Degen Set Designs, 1970-20091
- Derrick Joshua Beard Collection, Circa 1854-19861
- Devery Anderson Papers, 1922-2014, bulk 1955-20051
- Dexter M. Easton Papers, 1945-2010, Date acquired: 12/09/20101
- Dodson, Craddock, and Born Scrapbook Collection, 1954-1995, Date acquired: 00/00/19971
- Don Veller Collection, 1948-2003, bulk 1993-20031