- MAES Image Collection (23932)
- MMPI Conversation with Ben-Porath and Tellegen (7)
- Manuel Gallego y Valcarcel Papers (219)
- Manuscript Lecture Notes (25)
- Manzanar Free Press (188)
- March on Washington Records (25)
- Margaret B. Davis Papers (43)
- Margaret Berry Papers (17)
- Marilyn Chiat Collection (75)
- Mario Pavone Papers (4)
- Max Lowenthal Papers (26)
- Max Yergan Papers (18)
- Maxine Rude - Displaced Europe 1945-1946 (68)
- Maywald Collection (1809)
- McBurney YMCA Records (4)
- Medical Receipt Books (53)
- Michael L. Courtney Papers (1)
- Milton Yale Papers (3)
- Ming Gazetteer Images (1010)
- Minneapolis Architecture, 1848-1908 (283)
