President, Louis G. Cowan Company, public relations, 1931-1941, Louis G. Cowan, Inc., radio and television prodns., 1946-1955. Vice president creative services Columbia Broadcasting System, Inc., 1955-1958, president Columbia Broadcasting System television Network, 1958-1959. Director Morse Communication Research Center, Brandeis U., Waltham, Massachusetts, 1961-1965.
Director Special Programs, Graduate School Journalism, Columbia, New York City, 1965-1976. President, editor Chilmark Press, Inc., 1962-1976. Chairman publications and advisory board Partisan Review.
Chairman public committee Columbia Journalism Review President Broadcast Institute N. American National chairman Weiner Oral History Library, American Jewish Committee Trustee International Broadcast Institute Cons. radio section Bureau Public Relations, War Department, 1941-1943. Director Voice American, chief New York City office Overseas O.W.I., 1943-1945.