- London (England)1
- Lucerne (Switzerland)1
- Lyles, William Boykin--1775-1865--Estate.1
- Maps1
- Marching bands1
- Martin, John Alfred, 1921-20091
- McConnell, Tom, 1926-20131
- McCrory, Henry Lawrence, b. 1863--Biography.1
- McMaster, Doctor James Riley--Correspondence1
- McMaster, Dr. James Riley--Correspondence1
- McMaster, James Riley--Correspondence1
- McMaster, Richard Nott--Correspondence1
- McMaster,Richard Nott--Correspondence1
- Medical College of South Carolina (1824-1838)--Dissertations1
- Methodists--South Carolina1
- Military railroads--South Carolina--Maps1
- Military railroads--United States--Maps1
- Milling, David--Correspondence1
- Milling, Mrs. David--Correspondence1
- Mizell, M. Hayes1