- British Broadcasting Corporation, Written Archive Centre1
- Broszat, Martin1
- Brown, J. F.1
- Brzeziński, Zbigniew1
- Bukharin, Nikolai Ivanovich1
- Bulgarian Unit1
- Buza, Márton1
- Būčys, Pranciškus Petras1
- Caute, David1
- Chaianov, A. V.1
- China. Zhongguo ren min jie fang jun. Zong zheng zhi bu1
- Churchill, Randolph S.1
- Ciołkoszowa, Lidia1
- Cohen, Mark I.1
- Communist Party of the United States of America1
- Constitutional and Legal Policy Institute at OSI-Budapest1
- Csiszér, Béla1
- Czechoslovak Unit1
- Czerniawski, Adam1
- Dallin, Alexander1