- S. Bassett French Papers (I) and (II), 1858/18921
- S. C. Robinson Letter, 18611
- S. G. Davis Ledger, 1860/18752
- S. Maria Elliott Family Collection, 1826/19421
- S.W. Davis, Minister, Journal, 1860/18661
- Sabra Lucinda (Miner) Sturgiss Papers, 1838/19091
- Sailing Diary, 1857/18722
- Saint Andrew's Society collection, 1861/19956
- Salt Sulphur Springs Records, 1819/19321
- Salt Sulphur Springs Records, 1825/18831
- Sam Bowman Papers, 1848/19672
- Sam di Bonaventura papers, 1900/19982
- Samuel A. Creelman Papers, 1861/19062
- Samuel B. Finley Account Books, 1802/18591
- Samuel D. Morton and Co. Account Books, 1826/18914