- Hammond, Harry, 1832-19161
- Hammond, James Henry, 1807-18641
- Heliograph1
- Hemphill, John J. (John James), 1849-19121
- Herbaria--History Plant collectors--History--19th century1
- Human Beings1
- Ichthyology--Research1
- Inner planets1
- Insects--South Carolina1
- Insects--United States1
- Iron mines and mining--South Carolina1
- James Woodrow Papers, South Caroliniana Library, University of South Carolina, Manuscript Annex1
- Jewelry1
- Jones, Iredell, 1842-1914--Correspondence1
- Joynes, Edward S. (Edward Southey), 1834-19171
- Keitt, Suzanne Mandeville Sparks, 1834-1915--Correspondence1
- Kentucky and Virginia resolutions of 17981
- Lichens--North America--Classification1
- Lide, Robert Wilkins, 1852-19401
- Liverworts--United States1