Collection
- Al Gross Papers, 1909/20001
- Aldo Leopold Charts, 1929/19301
- Alfred W. Lawson Collection, 1913/19481
- Alice Langley Hsieh Papers, 1943/19781
- Arthur B. Massey Papers, 1902/19611
- Arthur M. Squires Papers, 1888/1987, bulk 1940/19871
- Avery-Abex Metallurgical Collection, 1920/19871
- Aviation Brochures and Pamphlets Collection, 1910/19581