Collection
- Maude "Dusty" McDonald Collection, circa 1970 - 19762
- Maynard Apartments Postcard, Circa 19562
- McNab Collection, 19572
- Michael Rothenberg Papers, Date acquired: 00/00/20182
- Mildred Hoffenbloom manuscript, January 14, 2002, Date acquired: 05/28/2002, bulk 1942-19452
- Miller A. Trammell papers, 1943-1945, Date acquired: 07/20/2015, bulk 1943-19442
- Millie Nauman collection, Date acquired: 1992-06-02, 19442
- Milton J. Rosen Photographs, 1945-1946, Date acquired: 2017-06-152
- Mitch Finegold Collection, Circa 1920s-19682
- Morris Nankin Collection, Circa 19502
- Morris and Flora Fisher Real Estate Documents, Circa 1925-19262
- Murphy, Frank H., Papers, Date acquired: 06/18/19822
- Natalia Grauer Rosenwald transcript, 1939-2004, Date acquired: 08/13/2004, bulk 1939-19452
- Native American and Indigenous Study Center Records, 2024 April 152
- Norval Vernon Cummings manuscript, 1925-2003, Date acquired: 2017-08-23, bulk 1943-19462
- Oil paintings, 19302
- Orlando Trujillo papers, 2011-2011, Date acquired: 04/14/20112
- Ormsby Family Collection, 1856-19332
- Painting by Haitian artist Y. Antoine, Undated2
- Panama Canal Collection, 1967-1973, Date acquired: 00/00/19822