Director, vice president American Friends of Whitechapel Art Gallery Foundation, since 1991. Trustee, member executive committee American Center Oriental Research in Amman, since 1993. Director Theatre for a New Audience, since 2008.
Fellow American College Trust and Estate Counsel (chairman international estate planning committee 2003-2006, regent 2005-2011). Member New York State Bar Association (chairman estate and gift tax committee 1983-1984, chairman exempt organization committee 1986, chairman income taxation of trusts committee 1984-1985, 87-89, executive committee tax section 1983-1989), International Academy Estate and Trust Law (past president).