- Lutheran Church1
- Lutheran Theological Southern Seminary1
- Lutheran Theological Southern Seminary--History1
- Malaria11
- Maps3
- Masques1
- McBee, Vardry, 1775-18641
- Mechanicsville Baptist Church (Darlington County, S.C.)2
- Medical College of the State of South Carolina--Dissertations15
- Medicine1
- Memorandums1
- Mexican War, 1846-1848--Maps2
- Mexico City (Mexico)--History--American occupation, 1847-1848--Maps2
- Milford Baptist Church (Greenville County, S.C.)1
- Military ceremonies, honors, and salutes--South Carolina1
- Minerals -- Catalogs and collections.1
- Mizpah Baptist Church (Florence County, S.C.)1
- Mount Ararat Baptist Church (Cherokee County, S.C.)1
- Mount Carmel Baptist Church (Pickens County, S.C.)1
- Mount Pisgah Baptist Church (Anderson County, S.C.)1