Events
- 1775 – American Revolutionary War: Battle of Bunker Hill
- 1839 – In the Kingdom of Hawaii, Kamehameha III issues the Edict of toleration which gives Roman Catholics the freedom to worship in the Hawaiian Islands. The Hawaii Catholic Church and the Cathedral of Our Lady of Peace is later established as a result.
- 1863 – Battle of Aldie in the Gettysburg Campaign of the American Civil War.
- 1876 – Indian Wars: Battle of the Rosebud – 1,500 Sioux and Cheyenne led by Crazy Horse beat back General George Crook's forces at Rosebud Creek in Montana Territory.
- 1877 – Indian Wars: Battle of White Bird Canyon – The Nez Perce defeat the US Cavalry at White Bird Canyon in the Idaho Territory.
- 1885 – The Statue of Liberty arrives in New York Harbor.
- 1898 – The United States Navy Hospital Corps is established.
- 1901 – The College Board introduces its first standardized test, the forerunner to the SAT.
- 1930 – U.S. President Herbert Hoover signs the Smoot–Hawley Tariff Act into law.
- 1932 – Bonus Army: Around a thousand World War I veterans amass at the United States Capitol as the U.S. Senate considers a bill that would give them certain benefits.
- 1933 – Union Station Massacre: In Kansas City, Missouri, four FBI agents and captured fugitive Frank Nash were gunned down by gangsters attempting to free Nash.
- 1948 – A Douglas DC-6 carrying United Airlines Flight 624 crashes near Mount Carmel, Pennsylvania, killing all 43 people on board.
- 1963 – The United States Supreme Court ruled 8 to 1 in Abington School District v. Schempp against allowing the reciting of Bible verses and the Lord's Prayer in public schools.
- 1972 – Watergate scandal: Five White House operatives are arrested for burglarizing the offices of the Democratic National Committee, in an attempt by some members of the Republican party to illegally wiretap the opposition.
- 1992 – A 'Joint Understanding' agreement on arms reduction is signed by U.S. President George H. W. Bush and Russian President Boris Yeltsin (this would be later codified in START II).
- 1994 – Following a televised low–speed highway chase and a failed attempt at suicide, O.J. Simpson is arrested for the murders of his wife, Nicole Brown Simpson, and her friend Ronald Goldman.