Member board overseers Thomas J. Watson Institute for International Studies, since 1981. Member visiting committee Center for Old World Archaeology and Art, 1981-1992. Vice chairman board governors John Carter Brown Library., since 1988.
Trustee Lawrenceville School, New Jersey, since 1984, president board trustees, 1997-2001. Chairman Archaeol Institute American, since 1992. President board trustees American Center Oriental Research, Amman, Jordan, since 1992.
Member visiting committee Boston Museum Fine Arts, 1985-1992. Director Clear Pool Camp, 1976-1985. Co-founder American School Milan, 1962, board governors, 1961-1965, president 1963-1964, finance committee 1962-1965.
Trustee St. Croix Landmark Society, Fredericksted, United States Virgin Islands, since 1995. Trustee International Research and Exchs. Board, since 1998. Member United States Chamber of Commerce (governor Hong Kong chapter), United States-Union of the Soviet Socialist Republics Trade and Economic Council (tourist and travel committee 1974-1977), Hungarian-American Trade and Economic Council (vce chairman 1984-1987), Exploreer's Club, India House, Hong Kong Club (life), Brown Club, Larchmont Yacht Club, St. Croix Yacht Club (United States VI) University Club (Providence), Hope Club, Knickerbocker Club.