Arbitration and mediation expert John W. "Jack" Cooley, a former U.S. magistrate judge, passed away from multiple myeloma on July 21 at his home in Evanston. Mr. Cooley worked for two large private arbitration and mediation firms.

He taught conflict resolution at Northwestern University's law school for the last 12 years and wrote several books, including "The Mediator's Handbook" and "The Arbitrator's Handbook." He later came to believe his cancer was caused by exposure to Agent Orange during the war, and the government accepted his claim earlier this year, his daughter said. Raised in St. Louis, where his father was a barber, Mr. Cooley went to a private military academy before joining the Class of 1965 at the U.S. Military Academy at West Point. He reached the rank of captain, but a tour of duty in Vietnam led him to law school.

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