Chairman executive committee United Nations Association United States of America, 1964-1969, vice chairman, since 1969. Delegate National Conference, United States National Commission for United Nations Educational, 1951. Chairman Conference United States Responsibility for World Leadership, 1952.
Delegate to West Indies Conference, 1946, 48.
Board directors Stamford Area Commerce and Industry Association, 1975-1981.
Member executive committee National Bank of Westchester, Peoples National Corporation Member committee initiative and liaison Forum International pour la Paix, 1951-1954. Member executive committee American Association United Nations, 1946-1964, executive vice president, 1951-1957, acting president, 1957-1958, chairman board governors, 1952-1954, chairman board directors, 1954-1958, chairman executive committee, 1960-1964.
Member executive committee Speaker Services for United Nations, 1958-1968.
Member United Nations Committee City New New York Member drafting committee and member executive committee Commission to Study Organization Peace.
Member presidium Zagreb, Yugoslavia Conference Peace and International Cooperation, 1951. Member United States delegate
Member National Citizens" Commission on International Cooperation, 1964-1965, National Committee on Urban Development
Member National Committee on United States-China Relations, leader 1st delegate Member Society of America Military Engineers, Society Harvard Engineers and Scientists, American Institute of Mining, American Mathematics
Married Suzanne Hume, November 30, 1937. Children– Suzanne Abenun de Lima Knowles, Elizabeth Abenun de Lima Alter, Virginia Abenun de Lima Buckelew.
