| Hugh Macmillan Papers |
| George Lyons Papers |
| George Lutzai Papers |
| Mrs. Stanley Lowe Papers |
| Frank Lohr Papers |
| John W. Livingston Papers |
| Henry Richardson Linville Papers |
| Workers' Education Local 189 Records |
| Workers' Defense League Records |
| John Zaremba Papers |
| Cornelius J. Yaklin Papers |
| Richard Zweiback Papers |
| John L. Lewis Papers |
| Edward Levinson Papers |
| Madeleine M. Leininger Papers |
| W. Jett Lauck Papers |
| Labor's Non-Partisan League Records |
| Frank LaBita Papers |
| Wayne State University Kresge-Hooker Science Library Associates Records |
| Joseph J. Kowalski Papers |
| Matt Kobe Papers |
| Dr. Shmarya Kleinman Papers |
| Harvey Kitzman Papers |
| L. K. Kirk Papers |
| William Kircher Papers |
| Charles F. Kincaid Papers |
| Kenosha Labor Records |
| Casper P. Kenny Papers |
| Robert Kanter Papers |
| Jack Kadish Papers |
