- "More Than the Sum of Our Body Parts: An Exhibit by CARY, 1992-1993", 1934/20001
- 1x1 Japan Exhibition Materials, 1965-2024, 20241
- A. J. Davis Family Collection, 1874/2007, bulk 1874/19071
- A. Jane Duncombe Architectural Papers, 1952/20024
- Abbye A. Gorin Architectural Collection, 1940/2006, bulk 1995/20062
- Agricultural Extension Service Records, 1914/19801
- Al Gross Papers, 1909/200014
- Albert L. Sturm Papers, 1904/1988109
- Alberta Pfeiffer Architectural Collection, 1929/19762
- Alfred C. Payne Collection, 1917/200369
- Alice Langley Hsieh Papers, 1943/19785
- Alleghany Chapter, National Society of the Daughters of the American Revolution Records, 1890/202222
- Alliance of Women in Architecture (AWA) Records, 1992/19982
- American Egg Board Collection, 1974/20048
- American Work Horse Museum Collection, 1971/19998