- Manning, John L. (John Lawrence), 1816-1889--Homes and haunts--South Carolina--Sumter County1
- Manning, Richard Irvine, 1789-1836--Correspondence2
- Martin Luther King Jr., Day2
- Massachusetts1
- McCain, James T.1
- Medicaid3
- Medlock, Travis1
- Meetings--California1
- Midcom Corporation, Nuance Corporation, Terrell, Bill, Nations, Daryl, Jones, Eddie, Derrick, Charles, Denmark (S.C.)1
- Midcom Corporation, Rockhill (S.C.)1
- Middle school teachers1
- Middleton-Rosemond United Methodist, Columbia (S.C.), Newman, I. DeQuincey (Isaiah DeQuincey), 1911-1985, Clanton, Brandolyn Thomas, Meadowlake1
- Miller, Abram--Finance, Personal1
- Millford Plantation (S.C.)1
- Minorities in higher education2
- Minority college students2
- Mizell, M. Hayes2
- Moultrie, William, 1730-18051
- Moultrie, William, 1730-1805--Correspondence1
- Moxom, Priscilla1