Collection
- Salomon Family Photograph Album, ca. 1860s-19254
- Samuel Burrier cypher book, 1821-18222
- Samuel Latham Mitchill papers, 1801-1829 (majority within 1801-1813)524
- Samuel May Photograph Album, ca. 1943-19462
- Samuel Winship cash book, 1826-18272
- Samuel and Mary Bonnell diaries, 1848-18552
- Samuel and William Vernon collection, 1742-17983
- San Luis Valley, Colorado, Promotional Album, 19082
- Schoff Revolutionary War collection, 1766-1896294
- Science and Medicine collection, 1702-1936317
- Sears and MacDougall family collection, 1910s-1960s (majority within 1924-1953)2
- Seth Tinkham diary, 1758-17592
- Shimer family penmanship and cypher books, 1846-18532
- Smith family travel photograph albums, 1874-18752
- Society for the Prevention of Cruelty to Disabled Hats, ca. 1869-18702
- Stephen Williams penmanship copybook, [1840s]2
- Stephentown (N.Y.) Library School District account book and William Wallace Elliot penmanship exercise book, 1838-18402
- Stinchfield family papers, 1837-199915
- Strickland Family Photograph Album, ca. 1860-18932
- Summer 1894 Snapshot Album, 18942