"The Moscow Trials: A Statement by American Progressives, " New Masses, XXVI, May 3, 1938. Footnote 26, Chapter, 7 of, "Radical Visions and American Dreams: Culture and Social Vision in the Depression Years, " by Richard Pells, Harper and Row, 1973.
Excoriation of, "Trotskyites, "signed by Lillian Hellman, Malcolm Cowley, Dorothy Parker, John Garfield, Dashiell Hammett, Langston Hughes, Mark Blitzstein.
Another counter-petition to Dwight Macdonald initiated, "League for Cultural Freedom and Socialism, " denunciamento of the Purge Trials, by Popular Front libs and Stalinoids, had the bad luck to appear in The Nation just before the Stalin-Hitler Pact was announced. Cf. Wolfgang Leonhard's book on the shocked reaction of CP militants and cadre from Europe and the CPUSA. Title is, "Betrayal, " if memory serves. Leonhard was himself trained in Comintern schools. See his autobio, "Child of the Revolution."