- Acton, H. B.1
- Berlin, Isaiah1
- Djilas, Milovan1
- Dobb, Maurice1
- Eastman, Max1
- Garaudy, Roger1
- Hobsbawm, E. J.1
- Hunt, R. N. Carew1
- Lash, Nicholas1
- Lowe, Donald M.1
- Mattick, Paul1
- McLellan, David1
- Mehring, Franz1
- Symposium on the Role of Karl Marx in the Development of Contemporary Scientific Thought1
- Tucker, Robert C.1
- Zeitlin, Irving M.1