New York: Pioneer Publishers, November 8, 1937. 1p. printed letter, 8.5x11 inches, minor browning, "Trotskyite" written in pen in upper right corner. Letter done while the Trotskyists were on the way out of the Socialist Party. Signed, in print, by Max Eastman, Sidney Hook, James T. Farrell, Louis M. Hacker, James Rorty and Meyer Schapiro.