- S. Cole Bradley Papers2
- Saint Andrew's Society collection8
- Saleem A. Shah papers2
- Sallie Bennett Papers regarding World War I Flying Ace Louis Bennett, Jr.2
- Sally H. Thomas papers45
- Sally Jane Brown, Artist, Collection3
- Sally Waldner Bould Stan Architectural Collection6
- Sam McColloch, Compiler, Three Manuscripts regarding Family History, Artists, and Fighter Pilot1
- Sam McColloch, Photographer, Photographic Prints5
- Sam Sadler papers22
- Sam di Bonaventura papers23
- Samuel F. Harsh Family, Genealogy, Photographs, and Artifacts1
- Samuel Spencer Stone, Compiler, Stone Family Papers4
- Samuel Vaughan Wilson Papers140
- Samuel Wilbert Tucker Collection2