- M. Caldwell Butler Papers
1945-2006494
- M. Rupert Cutler Papers, 1930/2021, bulk 1962/202189
- M. Strickler Letters, 18642
- M. Thomas Inge papers, 1879/20011,018
- M.E. Lovell manuscript embroidery book and sample work, 1900/19132
- MAGLEV Collection, 1999/20033
- MCV Foundation/Monumental Church records, 1957/196516
- MacKenzie World War II Collection, 1939-194622
- MacMillan Albums, 1843/18513
- Machu Picchu Photography Prints and Brochure, 20111
- Macky-Dunbar Records, 1796-18141
- Macon County, Alabama, Household and Recipe Book, 1842/19181
- Madeline Warburton Correspondence & Ephemera, 1913/191626
- Madison College student protest, April 1970, oral histories, 19983
- Madison County (Va.) Coroners' Inquisitions, 1815-18991