| NALC Office of the President: James H. Rademacher Records | Abstracts |
| NALC Auxiliary Records | Abstracts |
| NALC Office of the Executive Vice President Records | Abstracts |
| NALC Office of the President: J. Joseph Vacca Records | Abstracts |
| NALC Office of the Secretary-Treasurer Records | Abstracts |
| NALC Office of the Vice President Records | Abstracts |
| National Campaign For Agricultural Democracy Records | Abstracts |
| National Caucus of Labor Committees Records | Abstracts |
| National Founders Association Records | Abstracts |
| National Policy Association Records | Abstracts |
| National Sharecroppers Fund Photographs | Abstracts |
| National Sharecroppers Fund Records | Abstracts |
| National War Labor Board Records | Abstracts |
| Newspaper Guild Records | Abstracts |
| Stanley and Margaret Collingwood Nowak Papers | Abstracts |
| Francis O'Rourke Diary | Abstracts |
| William Oliver Papers | Abstracts |
| Ralph Orr Papers | Abstracts |
| Owosso Education Association Records | Abstracts |
| Frances D. and G. Lyman Paine Papers | Abstracts |
| Victor and Bernice Pasche Papers | Abstracts |
| Peabody Report | Abstracts |
| People's Song Library Records | Abstracts |
| Frances Perkins Papers | Abstracts |
| Carl Person Papers | Abstracts |
| Peter and Tom Wolf Papers | Abstracts |
| Henry J. Pfaff Papers | Abstracts |
| Norman E. Philleo Papers | Abstracts |
| Pinkerton's National Detective Agency Reports | Abstracts |
| Robert Pisarski Papers | Abstracts |
| Joe Placentia Papers | Abstracts |
| Sam Pollock Papers | Abstracts |
| Thomas E. Posey Papers | Abstracts |
| Otto Pragan Papers | Abstracts |
| Press Associates, Inc. Records | Abstracts |
| Quarry Workers International Union of North America Records | Abstracts |
| Samuel Rabinovitz Papers | Abstracts |
| Sophia Radlow Papers | Abstracts |
| Esther H. Read Papers | Abstracts |
| Herman Rebhan Papers | Abstracts |
| Harry Riseman Papers | Abstracts |
| Linda Roberts Papers | Abstracts |
| Barry Roderick Papers | Abstracts |
| Marvin Rogoff Papers | Abstracts |
| Jack Rugh Papers | Abstracts |
| Wilbert Salmi Papers | Abstracts |
| Sanitary Chemists and Technicians Association Records | Abstracts |
| George James Saul Manuscript | Abstracts |
| Albert Sayer Papers | Abstracts |
| Helen Schiff Papers | Abstracts |
