- Beck, Józef1
- Belarusfilm1
- Belügyminisztérium Központi Irattára1
- Benois, Alexandre1
- Bialoguski, Michael1
- Bieńkowska, Danuta1
- Biskupski, Stefan1
- Borodin, Nikolai Mikhailovich1
- Borsszem Jankó1
- Brandenstein, Béla1
- British Broadcasting Corporation, Written Archive Centre1
- Bulganin, Nikolay Aleksandrovich1
- Bulgarian Unit1
- Bull, Geoffrey T.1
- Butler, Ewan1
- Buñuel, Luis1
- Chirikov, E. N.1
- Communist International (Comintern)1
- Congress of Industrial Organizations (U.S.). Legislative Department1
- Council on foreign relations1