- Mao, Zedong7
- 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
- Tang, Peter S. H.3
- United States. Congress. House. Committee on Un-American Activities3
- Carr, Edward Hallett2
- Chamberlin, William Henry2
- Communist International2
- Dallin, David J.2
- Daniels, Robert V.2
- Delaney, Robert Finley2
- Eastman, Max2