June 23, 1868: <a href="/dictionary/Sholes">Christopher Latham Sholes</a> received a patent for an invention he called a ''Type-Writer.''
June 23, 1947: The Senate overrode <a href="/biographies/government-politics/us-presidents/harry-s-truman">President Truman's</a> veto of the <a href="/encyclopedia/social-science/economy/labor/tafthartley-labor-act">Taft-Hartley Act</a>.
June 23, 1969: <a href="/encyclopedia/people/history/supreme-court/burger-warren-earl">Warren Burger</a> was sworn in as Chief Justice of the <a href="/encyclopedia/history/north-america/us-courts/supreme-court-united-states">U.S. Supreme Court</a>.
June 23, 1972: <p><a href="/biographies/government-politics/us-presidents/richard-milhous-nixon">Richard Nixon</a> and H. R. Haldeman discussed ways to obstruct the FBI's <a href="/encyclopedia/history/north-america/us/watergate-affair">Watergate</a> investigation. Revelation of this conversation spurred on Nixon's 1974 resignation.</p>
June 23, 1992: Mobster <a href="/node/145387">John Gotti</a> was sentenced to life in prison.
June 23, 1995: <a href="/encyclopedia/medicine/bios/medical/salk-jonas-edward">Dr. Jonas Salk</a>, the medical pioneer who developed the first <a href="/encyclopedia/medicine/diseases/pathology/poliomyelitis">polio</a> vaccine, died.
June 23, 2003: The <a href="/encyclopedia/history/north-america/us-courts/supreme-court-united-states">U.S. Supreme Court</a> upheld the University of Michigan's School of Law <a href="/history/us/timeline-of-affirmative-action-milestones">affirmative action</a> policy.
More events from This Day in History: June 23