- S. Cole Bradley Papers2
- Saint Andrew's Society collection24
- Saleem A. Shah papers19
- Sallie Bennett Papers regarding World War I Flying Ace Louis Bennett, Jr.2
- Sally H. Thomas papers43
- Sally Jane Brown, Artist, Collection3
- Sally Waldner Bould Stan Architectural Collection5
- Sam McColloch, Compiler, Three Manuscripts regarding Family History, Artists, and Fighter Pilot1
- Sam McColloch, Photographer, Photographic Prints7
- Sam Sadler papers22
- Sam di Bonaventura papers32
- Samuel F. Harsh Family, Genealogy, Photographs, and Artifacts1
- Samuel Spencer Stone, Compiler, Stone Family Papers4
- Samuel Vaughan Wilson Papers161
- Samuel Wilbert Tucker Collection2