Law Clerk to: Chief Judge Calvert Magruder, U.S. Court of Appeals for the First Circuit, 1955; Earl Warren, Chief Justice of the United States, 1956. Partner, Wilmer, Cutler & Pickering, 1962-1988. Visiting Professor from Practice, Harvard Law School, 1976. Adjunct Professor of Law, Georgetown University Law Center, 1978-1992. Assistant Counsel, Warren Commission, 1964.