- M. Thomas Inge papers, 1879/20011
- M.J. Garrison and Company Records, 1868/19221
- MCV Foundation/Monumental Church records, 1957/19654
- Mabel DeVries Tanner, Playwright, Correspondence and Play Scripts, 1906/19651
- Mabel Marie Griffith, Compiler, Scrapbooks of a Morgantown Resident, 1903/1929, bulk 1911/19201
- Maben Jones Papers8
- Mackall Rust Bruin, Jr. collection, 1920/19232
- Madison Friendship Lodge Grand United Order of Odd Fellows collection, 1880/19378
- Mae Robinson Stiles, Compiler, History of Wana, 1800/19301
- Maguire Family Scrapbook, 1911/19292
- Major W. P. Tams, Jr. Transcript of an Interview, 1825/19341
- Malcolm MacPherson Brownlee Civil War diary and transcription, 1862/20201
- Male (Mayle) Family Genealogical Research Material, 1800/19801
- Malone Family Genealogy, 1700/19501
- Manley Family papers, 1707/19535