Portrait of Paul R. Porter, used in the 1980 Conference, "The Conduct of Foreign Policy during the Truman Administration." Mr. Porter was Deputy Chief, then Chief, Mission for Economic Affairs, American Embassy, London, 1945-47, Chief, U. S. delegate, Economic Commission for Europe, Geneva, Switzerland, 1947-49; Chief, Economic Cooperation Administration Mission to Greece, 1949-50; Assistant Administrator, Economic Cooperation Administration, 1950-51; U. S. Special Representative in Europe, Marshall Plan, 1951; Deputy, U. S.