- Marion, Francis, 1732-1795--Correspondence1
- Maxey, Russell, 1906-19941
- May Day--United States--History.1
- McCormick County (SC)--Description and travel1
- McCormick County (SC)--Pictorial works1
- McLeod, William James, 1919-20101
- Mechanical drawing1
- Mecherle, George J. (George Jacob), 1877-19511
- Medical University of South Carolina1
- Medicine--South Carolina--Charleston County--History1
- Memorial Day1
- Memorials1
- Merrill, Dick, 1894-19821
- Mikell, Walker Taylor1
- Military camps1
- Mills Family1
- Monuments--South Carolina--McCormick County--Pictorial works1
- Morris College (Sumter, S.C.)1
- Mount Carmel Baptist Church (Pickens County, S.C.)1
- Mountain Creek Baptist Church (Edgefield County, S.C.)1