Collection
- Roberts, Theodore R., Papers, 1878-1995, Date acquired: 01/00/19951
- Rondeau Boyd Laffitte General Store Merchandise Account Books, 1890-1913, bulk 1902-19071
- Rosasco Papers (Group 2), 1895-1958, Date acquired: 06/12/19681
- Ruby Diamond collection, 1773-19811
- Ruth Carrell Johnson papers, 1899-1980, bulk 1940-19751
- Sadoff Collection of Cashbooks and Banking Records, 1805 - 19721
- Santa Rosa County Land Records, 1856-1935, Date acquired: 00/00/19831
- Scarborough Gifts: Morgan and Carn Papers, 1892-1924, Date acquired: 03/11/19591
- Scarborough Papers, 1868-1945, Date acquired: 06/13/19661
- Senator Duncan U. Fletcher Papers, 1860-1936, Date acquired: 08/06/19651
- Sheldon Abend American Theater Collection, 1874-19681
- Sixto Campano Collection, Circa 1848-19741
- Skilling Family collection, 1941-1946, Date accessioned: 2019-05-281
- Smith Families of Virginia Letters, 1831-19421
- Snodgrass Collection, 1871-1985, Date acquired: 07/00/19851
- Sociedad la Unión Martí-Maceo records, 1853-2000, 19831
- Society of African Missions Postcard Collection, Circa 1858-19701
- Sol and Sadie Malkoff Papers, 1900-19991
- Southwest Florida Map Collection, 1925-20171
- Spessard Lindsey Holland Papers, 1892-19711