- S. Corder Musgrave Papers, 1891/19661
- S. F. (Bill) Royall, Jr. papers, 1883/19791
- S. George Company Records, 1900/19751
- S. Maria Elliott Family Collection, 1826/19421
- S. Vernon McCasland papers, 1928/19541
- S.A. Thompson Family Papers, 1899/19301
- Saint Andrew's Society collection, 1861/19958
- Sallie Bennett Papers regarding World War I Flying Ace Louis Bennett, Jr., 1873/2009, bulk 1904/19266
- Salvation Army Combined Corps Roll and Ledger, 1926/1980, bulk 1928/19692
- Sam Bowman Papers, 1848/19672
- Sam Huff, West Virginia University and National Football League Football Player, Papers, 1930/2019, bulk 1955/20101
- Sam McColloch, Compiler, Three Manuscripts regarding Family History, Artists, and Fighter Pilot, 1904/20141
- Sam di Bonaventura papers, 1900/199817
- Samuel Bolitho Jeffries Diaries, 1912/19512
- Samuel D. Rockenbach papers, 1889/19453