| Association for Union Democracy Records | Abstracts |
| Association of Catholic Trade Unionists of Detroit Records | Abstracts |
| Association of Flight Attendants: Dallas Records | Abstracts |
| Automotive Salesmen's Association Records | Abstracts |
| Charles Baker Papers | Abstracts |
| Wilbur and Mary Alice Baldinger Papers | Abstracts |
| Don Ball Papers | Abstracts |
| Jack Barbash Papers | Abstracts |
| Bob Barber Papers | Abstracts |
| Henry W. Bartell Papers | Abstracts |
| Joseph Basso Papers | Abstracts |
| Robert "Buddy" Battle III and Marion Battle Papers | Abstracts |
| Warner Baxter Papers | Abstracts |
| Charles Beckman Papers | Abstracts |
| John Beffel Papers | Abstracts |
| Herman Benson Papers | Abstracts |
| Julius Bernstein Papers | Abstracts |
| Meyer Bernstein Papers | Abstracts |
| Thelma Bernstein Papers | Abstracts |
| Helen W. Berthelot Papers | Abstracts |
| Glen R. Betts Papers | Abstracts |
| William W. Betts Papers | Abstracts |
| Sam Blackburn Papers | Abstracts |
| John Blaich Papers | Abstracts |
| Ann Blankenhorn Papers | Abstracts |
| Heber Blankenhorn Papers | Abstracts |
| Irving Bluestone: Saturn Corporation Papers | Abstracts |
| Eula Booker Papers | Abstracts |
| Philip Booth Papers | Abstracts |
| Selma Borchardt Papers | Abstracts |
| Robert Bordner Papers | Abstracts |
| George And Grace Brewer Papers | Abstracts |
| Bricklayers and Masons International Union of America Records | Abstracts |
| British Columbia Teachers' Federation Records | Abstracts |
| Charles Brooks Papers | Abstracts |
| Brotherhood of Maintenance of Way Employes Records | Abstracts |
| Ivan Brown Papers | Abstracts |
| James H. Brown Papers | Abstracts |
| Roy M. Brown Papers | Abstracts |
| Floyd Bueno Papers | Abstracts |
| Valery Burati Papers | Abstracts |
| David S. Burgess Papers | Abstracts |
| Robert Burkart Papers | Abstracts |
| George Burt Papers | Abstracts |
| John Burton Papers | Abstracts |
| William Cahn Papers | Abstracts |
| Mellie and Herbert S. Calvert Papers | Abstracts |
| James B. Carey Papers | Abstracts |
| Robert E. Carlson Papers | Abstracts |
| Lawrence Carlstrom Papers | Abstracts |
