Arnold Wm. Rachman is a clinical psychologist and relational psychanalyst who has contributed to the recovery of the life and work of Sandor Ferenczi and the Budapest School of Psychanalysis.

Paul Mattick taught for many years at Adelphi University. He is author of Social Knowledge (1986), Art in its Time (2003) and Theory as Critique (2018), among other books, articles and reviews.