New York: Workers Age 1940 Poland, acid test for a people’s peace New York: Polish Labor Group 1945 Diego Rivera Washington: Pan American Union 1947 Three who made a revolution, a biographical history Washington: Dial Press 1948 Operation rewrite; the agony of Soviet historians New York, N.Y.?: Council on Foreign Relations?, 1948 An exclusive radio interview with Stalin on peace and war: based on a series of three broadcasts by the Voice of America, October, 1951(with Catharine de Bary) S.l.: Distributed by the United States Information Service 1951 Six keys to the Soviet system Boston: Beacon Press 1956 Khrushchev and Stalin’s ghost; text, background, and meaning of Khrushchev’s secret report to the Twentieth Congress on the night of February 24-25, 1956. New York: Praeger Publishers 1957 The durability of despotism in the Soviet system; Changes in Soviet Society, conference under the auspices of St. Anthony’s College in association with the Congress for Cultural Freedom (June 24-29, 1957) Oxford: St.