| Frank Marquart Papers | Abstracts |
| Blaine Marrin Papers | Abstracts |
| Fred Masters Papers | Abstracts |
| Joseph Mattson Papers | Abstracts |
| Emil Mazey Papers | Abstracts |
| Ernest Mazey Papers | Abstracts |
| Ashby C. McGraw Papers | Abstracts |
| Thomas McNett Papers | Abstracts |
| Stoyan Menton Papers | Abstracts |
| Metropolitan Detroit AFL-CIO "Labor News" Photographs | Abstracts |
| Lewis H. Michener Papers | Abstracts |
| Michigan Coalition for Human Rights Records | Abstracts |
| Ira A. Miller Papers | Abstracts |
| Robert J. Mills Papers | Abstracts |
| David Moberg Papers | Abstracts |
| Prince Moon Papers | Abstracts |
| Ernest J. Moran Papers | Abstracts |
| Ken Morris Papers | Abstracts |
| Wyndham Mortimer Papers | Abstracts |
| Bette Murphy Papers | Abstracts |
| Vincent J. Murray Papers | Abstracts |
| Tony Nicols Papers | Abstracts |
| Stanley and Margaret Collingwood Nowak Papers | Abstracts |
| Francis O'Rourke Diary | Abstracts |
| William Ogden Papers | Abstracts |
| William Oliver Papers | Abstracts |
| John Oneka Papers | Abstracts |
| Charles Orr Papers | Abstracts |
| Joseph F. Pagano Papers | Abstracts |
| Francis Palmer Papers | Abstracts |
| John Panzner Papers | Abstracts |
| Paul Parker Papers | Abstracts |
| Oscar Paskal Collection | Abstracts |
| Joseph Piconke Papers | Abstracts |
| Fred C. Pieper Papers | Abstracts |
| James Poland Papers | Abstracts |
| Ethel Polk Papers | Abstracts |
| Philip D. Porter Papers | Abstracts |
| Will Poyfair Papers | Abstracts |
| Jacob Probe Papers | Abstracts |
| Edward Purdy Papers | Abstracts |
| Sophia Radlow Papers | Abstracts |
| Roy Reuther Papers | Abstracts |
| Victor G. Reuther Papers | Abstracts |
| Victor Reuther Papers | Abstracts |
| Victor Reuther: UAW New Directions Movement Papers | Abstracts |
| Irving Richter Papers | Abstracts |
| Archie W. Robinson Papers | Abstracts |
| Cecil Roeder Papers | Abstracts |
| Harry Ross Papers | Abstracts |
