On July 8, 1974, the United States Supreme Court heard oral arguments in the case of United States v. Nixon. The lawsuit arose after a subpoena was issued in the Watergate break-in case, demanding that President Nixon produce his secretly recorded conversations from the oval office.
The President filed a motion to quash the subpoena, claiming the recordings of his private conversations were protected by “executive privilege”. On July 24, 1974, the Supreme Court unanimously disagreed with him finding that the privilege was not absolute and inapplicable to the facts at issue. He was ordered to produce the tapes.
On August 9, 1974, the President announced his resignation and Nixon became the first president to resign from office. To learn more about these recordings (and hear excerpts from the tapes) watch HBO’s Nixon by Nixon: In His Own Words. It’s an extremely entertaining documentary.