- Lichtheim, George3
- Anderson, Thornton1
- Carr, Barry1
- Dunayevskaya, Raya1
- Hobsbawm, E. J.1
- Hunt, R. N. Carew1
- Kołakowski, Leszek1
- Luxemburg, Rosa1
- Marcuse, Herbert1
- Mattick, Paul1
- Mikhailov, Ivan1
- Plamenatz, John Petrov1
- Trager, Frank N.1
- Trotsky, Leon1
- Ulam, Adam B.1
- Ulam, Adam Bruno1
- Valdez, Jonathan C.1
- Vigor, P. H.1
- Wilczynski, Jozef1
- Wolfe, Bertram David1