- M. Caldwell Butler Papers1
- M. L. Foley Collection,3
- M. Rosaria Piomelli Architectural Collection4
- M. Rupert Cutler Papers3
- M. Thomas Inge papers1
- M.C. Wilhelm Medical History collection5
- M.H. Ross, Collector, Papers1
- M.S. Poffenbarger, Compiler, Genealogical Record1
- MCV Foundation/Monumental Church records12
- Mabel DeVries Tanner, Playwright, Correspondence and Play Scripts1
- Mabel Hoggard, Educator, Papers1
- Maben Jones Papers4
- Maddex Family Papers1
- Madison E. Marye Papers2
- Maggie Anderson, Poet, Papers5