Sandra Day O'Connor, the first woman to serve as a justice on the Supreme Court, has died. O'Connor died in Phoenix, Arizona on Friday of "complications related to advanced dementia, probably Alzheimer's, and a respiratory illness," the court announced. Fifty-one years old at the time of her nomination, O'Connor served for more than 24 years before retiring in 2006. O'Connor often cast the deciding vote on a wide range of issues, including abortion, affirmative action and religion. By the time she retired, she cast the deciding vote in over 350 Supreme Court cases, the Sandra Day O'Connor Insitute reports.

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Persons: Sandra Day O'Connor, O'Connor, Ronald Reagan, Sandra Day O'Connor Insitute Locations: Phoenix , Arizona