- Martha Elizabeth Cunningham Monteith Collection70
- Martha Elizabeth Cunningham Monteith Collection 1
- Martha Mondschein Bauer Papers, 1940-20013
- Martha Puckmire letters of guardianship and apprentices' indenture, 18522
- Marx E. Cohen Plantation Records, 1840-18683
- Mary Lamboll Thomas Beach Papers, 1822-189018
- Mary Motte Alston Pringle Receipt Book155
- Massenet First Edition Opera Scores1
- Master Plan Report 1940, Cheraw Recreational Demonstration Area3
- Materials towards a history of the Baptists in the provinces of Maryland, Virginia, North Carolina, South Carolina, Georgia1
- Mathurin Guerin Gibbs Plantation Register, 1824-18751
- Matthew J. & Arlyn Bruccoli Collection of F. Scott Fitzgerald1
- Maxcy Gregg Papers, 1835-1888.39
- Mayors of Columbia35
- McBee Sons & Company Store Ledger Book, 1846-1861508
- McColl High School Yearbooks19
- McKinnon Pastoral Record Book1
- McLeod Family Papers, 1873-1990 (bulk 1900-1965)4
- Medical College Expansion Program Lantern Slides,1
- Medical College Expansion Program Lantern Slides, 1954-1974201