- McSweeney, Miles Benjamin, 1855-1909--Pictorial works1
- Medical College of the State of South Carolina--Pictorial works1
- Medical University of South Carolina1
- Medical University of South Carolina--History1
- Medicines, Popular1
- Memorial Day1
- Merrill, Dick, 1894-19821
- Methodist Episcopal Church1
- Methodists1
- Mexico--Politics and government--1821-18611
- Middleton Place Gardens (S.C.)1
- Military cadets -- South Carolina -- Charleston1
- Military ceremonies, honors, and salutes--South Carolina--Charleston1
- Military courts--United States--History1
- Military parades & ceremonies.1
- Military supplies--South Carolina--History--19th century--Sources1
- Mints--United States--History1
- Minutes (Records)1
- Molen, William M.1
- Molen, William M. Poets, American--South Carolina--Charleston. Charleston (S.C.)--Intellectual life1