| Robert Kanter Papers |
| Jack Kadish Papers |
| Joint Committee on Library Service to Labor Groups Records |
| Robert and Margaret Johnston Papers |
| Edgar G. Johnston Papers |
| Newman Jeffrey Papers |
| Joseph Jablonower Papers |
| IWW San Francisco Bay Area Branch Records |
| IWW Minneapolis Branch Records |
| IWW Detroit/Ann Arbor Branch Records |
| Irving Bluestone: Weirton Steel Corporation Papers |
| Irving Bluestone: UAW New Directions Movement Papers |
| Iron Molders Union, New York Records |
| International Printing Pressmen Local 2 Records |
| International Longshoremen's & Warehousemen's Union Records |
| International Institute of Metropolitan Detroit: Old World Market Records |
| International Institute of Metropolitan Detroit: Florence Cassidy Records |
| Wayne State University Institute of Labor and Industrial Relations Area Manpower Institute for Development of Staff Records |
| Marie and David Ingar Papers |
| Illinois Labor History Society Records |
| Andres J. Ignasiak Papers |
| Nicholas Hyshka Papers |
| Charles K. Hyde Papers |
| Curt Hyans Papers |
| William Humphreys Papers |
| Arthur Hughes Papers |
| Susan Holleran Papers |
| S. L. Hoffman Papers |
| John S. Hirchak Papers |
| Joe Hill Papers |
