Weaver W. Dunnan, joined Covington & Burling in 1951 and worked in its tax department. His clients included IBM and United Technologies. He became a partner in 1960 and served on the firm's management committee from 1974 to 1978. He retired in the mid-1990s.

Dunnan was born in Paxton, Ill. He left his studies at Harvard University to serve in the Army during World War II. After the war, he reentered Harvard and received a bachelor's degree in history. He graduated from Harvard Law School in 1949 and was an editor of the Harvard Law Review.

After law school, he clerked for a federal judge and later for Supreme Court Justice Felix Frankfurter.

For many years, Mr. Dunnan taught law classes at George Washington University. He also served on the boards of Beauvoir, the National Cathedral Elementary School and St. Albans School. He was a member of the Chevy Chase Country Club.

He died on June 29, 2010.