| Roy M. Brown Papers | Abstracts |
| Buck Dinner Committee Records | 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 |
| Arthur W. Calhoun Papers | Abstracts |
| Mellie and Herbert S. Calvert Papers | Abstracts |
| Lester Cappon Papers | Abstracts |
| James B. Carey Papers | Abstracts |
| Robert E. Carlson Papers | Abstracts |
| Lawrence Carlstrom Papers | Abstracts |
| Center for Community Change Records | Abstracts |
| W. Ellison Chalmers Papers | Abstracts |
| Gordon W. Chapman Papers | Abstracts |
| Charles Chiakulas Papers | Abstracts |
| Chicago Union Printers Baseball Association Records | Abstracts |
| Ely Chinoy Papers | Abstracts |
| Louis Ciccone Papers | Abstracts |
| Cigar Makers Union No. 130 Records | Abstracts |
| CIO Department of Education and Research Records | Abstracts |
| CIO Executive Board Minutes and Proceedings | Abstracts |
| CIO Housing Committee: Leo Goodman Records | Abstracts |
| CIO Office of the Secretary-Treasurer Records | Abstracts |
| CIO Washington Office Records | Abstracts |
| Citizens for a United Detroit Records | Abstracts |
| Civil Rights Congress of Michigan Records | Abstracts |
| Charles J. Clark Papers | Abstracts |
| Coalition of Labor Union Women Records | Abstracts |
| Coalition of Labor Union Women: San Francisco Chapter Records | Abstracts |
| Coalition of Labor Union Women: Seattle Chapter Records | Abstracts |
| Coalition of Black Trade Unionists Records | Abstracts |
| Alton Cobb Papers | Abstracts |
| Kenneth V. and Sheila M. Cockrel Papers | Abstracts |
| David Cohen Papers | Abstracts |
| Oscar Cohen Papers | Abstracts |
| Ronald Cohen Papers | Abstracts |
| Sanford Cohl Papers | Abstracts |
| Camille Colatosti Papers | Abstracts |
| John Cole Papers | Abstracts |
| John and Phyllis Collier Photographs | Abstracts |
| Virgil Collins Papers | Abstracts |
| Columbia Typographical Union No. 101 Records | Abstracts |
| Committee for National Health Insurance Records | Abstracts |
| Commonwealth College Records | Abstracts |
| Concerned Unionists Records | Abstracts |
| Joseph P. Conlin Papers | Abstracts |
