Jaffe has been affiliated with a number of organizations. among which are the National League of American Writers. American Council on Soviet Relations. National Council of AmericanSoviet Friendship. the American League for Peace and Democracy. and the American Friends of the Chinese People. Jaffe has been a known contact of Earl Browder. Alexander Trachtenberg. head of the Communist International Publishers. Nathan Kohn. alias Nat Ross. head of the Communist Political Association in Minnesota. and Edward Barski. president of the Joint AntiFascist Refugee Committee. and others. During the instant investigation. Jaffe was known to have contacted Earl Browder on April 16. 22. and 25. 1945.