railroad. Mr. Von Ammon subsequently served as president of the Arizona Bar Association and as the firm's managing partner for many years. Between 1954 and 1962, Calvin Udall served as the attorney for Arizona in the titanic legal and political battle between Arizona and California for control of Colorado River water. Mr. Udall was part of Arizona's legal team in 1963 when the United States Supreme Court allocated the rights to Colorado River water. Without Colorado River water, growth of Arizona's major cities, particularly Phoenix, would never have materialized. Mr. Udall also was a tireless supporter of diversity in the legal profession, chairing the American Bar Association Task Force on Minorities in the Legal Profession, which issued its report in 1986, highlighting the lack of opportunities for minorities as lawyers and judges. He later served with a small group of legislators, judges and lawyers as the Ad Hoc Committee for Minority Opportunities in the Arizona Judiciary, which subsequently became the Commission on Minority Opportunities in the Arizona Judiciary through an Administrative Order of the Arizona Supreme Court in 1990. Continuing the firm's enduring presence on water issues facing the Southwest, Jim Johnson was a principal negotiator and drafter of the Arizona Groundwater Management Act, which was vital to balancing the growth in Arizona with the available water supply. Without the sustainable water supply that resulted from the state's Groundwater Management Act, growth in Arizona would have slowed decades ago. In 1957, John O'Connor joined the firm. He met his future wife, Sandra Day, while they served as editors of the Stanford Law Review. Sandra Day O'Connor went on to serve as the first female justice of the United States Supreme Court. When Justice O'Connor was nominated for the Supreme Court in 1981, she relied on attorneys from the firm to help her prepare for her confirmation hearings. When Justice O'Connor joined the Supreme Court in September 1981, she hired Fennemore Craig attorney, Ruth McGregor as her first law clerk. In 1974, Fennemore Craig hired its first two female attorneys, Ruth McGregor and Toni McClory. The firm subsequently became one of the first law firms in Arizona to elect females as shareholders. Ms. McGregor later served 11 years as a justice of the Arizona Supreme Court. Justice McGregor served as an associate justice until 2005, when she became the court's second female chief justice. Ms. McClory went on to serve as