- S. Cole Bradley Papers2
- S. Eliot Breneiser Papers9
- S. F. (Bill) Royall, Jr. papers6
- S. George Company Records1
- Saint Andrew's Society collection18
- Saleem A. Shah papers30
- Sallie Bennett Papers regarding World War I Flying Ace Louis Bennett, Jr.2
- Sally H. Thomas papers3
- Sally Jane Brown, Artist, Collection3
- Sally Waldner Bould Stan Architectural Collection3
- Salvation Army Combined Corps Roll and Ledger2
- Sam Huff Artifacts, Scrapbooks, and Other Material1
- Sam McColloch, Compiler, Three Manuscripts regarding Family History, Artists, and Fighter Pilot1
- Sam Sadler papers1
- Sam di Bonaventura papers265