- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)184
- Open Society Archives at Central European University14
- Mao, Zedong7
- Héderváry, Claire de6
- Djilas, Milovan5
- Trotsky, Leon5
- Ulam, Adam B.5
- Staar, Richard Felix4
- Brzezinski, Zbigniew3
- Caute, David3
- Gramsci, Antonio3
- Kommunisticheskaia partiia Sovetskogo Soiuza3
- Laqueur, Walter3
- Lichtheim, George3
- Magyar, Bálint3
- Open Media Research Institute3
- Radio Free Europe/Radio Liberty, Inc - Research Institute3
- Tang, Peter S. H.3
- United States. Congress. House. Committee on Un-American Activities3
- Beeson, Trevor2