| Michigan Farm Worker Ministry Coalition Records | Abstracts |
| Isadore Miles Papers | Abstracts |
| Ruth Milkman Papers | Abstracts |
| Ira A. Miller Papers | Abstracts |
| Robert J. Mills Papers | Abstracts |
| Prince Moon Papers | Abstracts |
| Ernest J. Moran Papers | Abstracts |
| Ken Morris Papers | Abstracts |
| Bette Murphy Papers | Abstracts |
| National Founders Association Records | Abstracts |
| National Policy Association Records | Abstracts |
| Mercedes Nelson Papers | Abstracts |
| Newspaper Guild Local 13 Records | Abstracts |
| Newspaper Guild Local 22: Detroit Records | Abstracts |
| Newspaper Guild Local 47: St. Louis Records | Abstracts |
| Newspaper Guild Local 82: Pacific Northwest Newspaper Guild Records | Abstracts |
| Tony Nicols Papers | Abstracts |
| Tatsuro Nomura Papers | Abstracts |
| Francis O'Rourke Diary | Abstracts |
| William Ogden Papers | Abstracts |
| John Oneka Papers | Abstracts |
| Orange County Interfaith Committee to Aid the Farm Workers Records | Abstracts |
| Owosso Education Association Records | Abstracts |
| Joseph F. Pagano Papers | Abstracts |
| Francis Palmer Papers | Abstracts |
| John Panzner Papers | Abstracts |
| Victor and Bernice Pasche Papers | Abstracts |
| Dolores Paskal Papers | Abstracts |
| Oscar Paskal Collection | Abstracts |
| Peabody Report | Abstracts |
| Raymond Peck Papers | Abstracts |
| Jana Pellusch Papers | Abstracts |
| Carl Person Papers | Abstracts |
| Joseph Piconke Papers | Abstracts |
| Pinkerton's National Detective Agency Reports | Abstracts |
| James Poland Papers | Abstracts |
| Helen and Mardy Polaner Papers | Abstracts |
| Ethel Polk Papers | Abstracts |
| Philip D. Porter Papers | Abstracts |
| Will Poyfair Papers | Abstracts |
| Otto Pragan Papers | Abstracts |
| Jacob Probe Papers | Abstracts |
| PROD, Inc. Records | Abstracts |
| Edward Purdy Papers | Abstracts |
| Quarry Workers International Union of North America Records | Abstracts |
| Leo Ranco Papers | Abstracts |
| Richard Reist Papers | Abstracts |
| Roy Reuther Papers | Abstracts |
| Victor G. Reuther Papers | Abstracts |
| Victor Reuther Papers | Abstracts |
