Collection
- Parsons collection of Peter Demens and the two St. Petersburgs (Florida and Russia), bulk 1890-20052
- Ramiro Casañas Collection, 1805-20062
- Rita B. and James Lassiter Botany collection, 1895-1975, Date acquired: 01/28/20162
- Robert H. Brown tourism collection, 1900-2013, bulk 1970-20102
- Russel Snow and Family Collection, 1873-19652
- Sanibel Island Collection, 1574-19982
- Simmons family papers, 1772-1951, Date acquired: 02/00/19622
- Snow Family papers, 1826-19562
- 17th-20th Century Correspondence and Documents, 1664-19761
- A. Bayard Angle papers, 1897-2001, Date acquired: 00/00/20031
- A.P. "Pat" Bolton Collection, 1936-19721
- Abril Lamarque Collection, 1883-20011
- Admiral Richard H. Leigh Papers, 1870-1944, Date acquired: 00/00/19581
- Advertising Trade Cards Collection, bulk 1870-19701
- Albert Waller Gilchrist Papers, 1876-19291
- Album of Florida photographs, 1870-19231
- Alice in Wonderland collection, 1900-2013, Date acquired: 05/00/20151
- Allen Morris Papers, 1861-19701
- American Cigar Company Havana Leaf Tobacco ledgers, 1902-19231
- American Sunday School Union Papers, 1882-1905, Date acquired: 00/00/19821