Collection
- Margaret M. MacGill Genealogy Collection (MS254)87
- Marguerite More Collection (MS246)24
- Mary Crawford Powell Collection (MS236)1
- Mary Louisa Slacum Benham Papers (MS062)23
- Mary Powell Scott Papers (MS411)2
- May Family Papers (MS233)32
- McKenney-Mills Collection (MS413)159
- McKnight, Piercy, and Jacobs Collection (MS051)1
- Milton Penn Collection (MS267)26
- Mollie Somerville Collection (MS156)1
- Montgomery Dent Corse Papers (MS065)17
- Mt. Vernon Cotton Factory Collection (MS097)9