- Benzell, Mimi1
- Benzene1
- Bergen, Edgar, 1903-19781
- Bicycles1
- Blue Grass Boys1
- Bluegrass musicians1
- Boy Scouts of America1
- Brito, Phil, 1915-20051
- Brotherhood of Locomotive Engineers (U.S.)1
- Brotherhood of Maintenance of Way Employees1
- Brotherhood of Painters, Decorators, and Paperhangers of America1
- Brotherhood of Railroad Signalmen1
- COSATU1
- Canned foods industry1
- Canova, Anne, 1901-19941
- Canova, Judy, 1913-19831
- Canova, Zeke, 1898-19801
- Carcinogens1
- Carter, Boake, 1898-19441
- Cassell, Pete1
