- Margaret B. Ballard, Compiler, Monroe County Historical Papers and Other Material, 1783/2021, bulk 1910/19701
- Marmaduke Herbert Dent (1849-1909) Papers, 18701
- Marmaduke Herbert Dent (1849-1909) Papers, 1885/19671
- Mary J. Tarowsky, Compiler, West Virginia University Photographs and Ephemera, 1898/19661
- Matthew Mansfield Neely (1874-1958), Politician, Papers, 1900/19541
- Matthew Mansfield Neely (1874-1958), Politician, Scrapbooks, 1900/19241
- Mildred Arnett-Reed Morgantown Scrapbook, 1924/19561
- Milspaw Folklore Collection, Typescripts, Tapes, and Films, 1972/19741
- Monongalia Academy Minute Book, 1827/18581
- Monongalia Academy to West Virginia Agricultural College, Deed, 18671
- Morgantown Historic Properties Inventory, Building Survey, 19821
- Mrs. Louise Morris, Collector, Papers, 1859/18641