- Sallie Bennett Papers regarding World War I Flying Ace Louis Bennett, Jr.1
- Sally H. Thomas papers28
- Sally Jane Brown, Artist, Collection5
- Sally Waldner Bould Stan Architectural Collection1
- Sam McColloch, Compiler, Three Manuscripts regarding Family History, Artists, and Fighter Pilot1
- Sam Sadler papers8
- Samuel F. Harsh Family, Genealogy, Photographs, and Artifacts1
- Samuel Spencer Stone, Compiler, Stone Family Papers1
- Samuel Vaughan Wilson Papers68
- Sarah Pillsbury Harkness Architectural Collection2
- Schola Cantorum Records14
- School of Architecture student records from Professor Michael Bednar courses3
- School of Business records10
- School of Education Records8
- School of Theatre and Dance Records2