- M. Thomas Inge papers, 1879/20011,029
- M. W. Haymond, Signer, Post-Civil War Voter's Affidavit, 18651
- M.C. Webb Diary, 1942/19532
- M.C. Wilhelm Medical History collection, 1959/197619
- M.E. Griffin Letter, 18631
- M.E. Lovell manuscript embroidery book and sample work, 1900/19133
- M.E.G. Letter to Hugh Green, 18602
- M.H. Ross, Collector, Papers, 1930/19741
- M.H. Ross, Collector, Papers, 1931/19574
- M.H. Ross, Collector, Papers, 1937/19451
- M.J. Garrison and Company Records, 1858/19201
- M.J. Garrison and Company Records, 1868/19221
- M.J. Garrison and Company Records, 1876/19121
- M.L. Day Bill of Exchange and Promissory Notes, 18363
- M.L. Higgins Diary, 18623