- Fischer, George2
- Trotsky, Leon2
- Brogan, D. W.1
- Danilenko, Dmitrii Ivanovich1
- Debray, Régis1
- Deutscher, Isaac1
- Eastman, Max1
- Ellul, Jacques1
- James, C. L. R.1
- Johnson, Chalmers1
- Kautsky, Karl1
- Lepape, Pierre1
- Mao, Zedong1
- Rosenstock-Huessy, Eugen1
- Thompson, Robert Grainger Ker1
- Timasheff, Nicholas S.1
- Zarodov, Konstantin Ivanovich1