- S. H. Coffman & Co. Ledger, 1831/18341
- S. Maria Elliott Family Collection, 1826/19421
- Saint Andrew's Society of Washington, D.C. records, 1861/19951
- Salt Sulphur Springs Records, 1819/19321
- Salt Sulphur Springs Records, 1825/18831
- Samuel B. Finley Account Books, 1802/18593
- Samuel Brown Memorandum Book, 1829/18322
- Samuel D. Morton and Co. Account Books, 1826/18914
- Samuel Davidson Family Papers, 1823/19392
- Samuel E. Smith record book, 1818/18502
- Samuel F. Bright account books, 1826/18611
- Samuel G. Clark Liberty Iron Furnace Collection, 1809/19172
- Samuel H. Yonge papers, 1890/19351
- Samuel Harrison Account Ledger for Inn and Cooperage, 1822/1831, bulk 1822/18231
- Samuel Henley Letter to Mr. Johnson, 1775/18001