1973: In horse racing, Secretariat wins the U.S. Triple Crown.
1972: Severe rainfall causes a dam in the Black Hills of South Dakota to burst, creating a flood that kills 238 people and causes $160 million in damage.
1968: U.S. President Lyndon B. Johnson declares a national day of mourning following the assassination of Senator Robert F. Kennedy.
1954: McCarthyism: Joseph Welch, special counsel for the United States Army, lashes out at Senator Joseph McCarthy during hearings on whether Communism has infiltrated the Army giving McCarthy the famous rebuke, "You've done enough. Have you no sense of decency, sir, at long last? Have you left no sense of decency?"
1944: World War II: The Soviet Union invades East Karelia and the previously Finnish part of Karelia, occupied by Finland since 1941.
1944: World War II: Ninety-nine civilians are hanged from lampposts and balconies by German troops in Tulle, France, in reprisal for maquisards attacks.
1928: Charles Kingsford Smith completes the first trans-Pacific flight in a Fokker Trimotor monoplane, the Southern Cross.
1923: Bulgaria's military takes over the government in a coup.
1915: William Jennings Bryan resigns as Woodrow Wilson's Secretary of State over a disagreement regarding the United States' handling of the sinking of the RMS Lusitania.
1900: Indian nationalist Birsa Munda dies in a British prison of cholera
1885: Treaty of Tientsin is signed to end the Sino-French War, with China eventually giving up Tonkin and Annam - most of present-day Vietnam - to France.