George Sand 1804 - Author Amandine Aurore Lucile Dudevant
- 1862 - The U.S. Congress established the Bureau of Internal Revenue.
- 1863 - During the U.S. Civil War, the first day's fighting at Gettysburg began.
- 1867 - Canada became an independent dominion.
- 1898 - During the Spanish-American War, Theodore Roosevelt and his "Rough Riders" waged a victorious assault on San Juan Hill in Cuba.
- 1943 - The U.S. Government began automatically withholding federal income tax from paychecks.
- 1963 - The U.S. postmaster introduced the five-digit ZIP (Zoning Improvement Plan) code.
- 1966 - The Medicare federal insurance program went into effect.
- 1969 - Britain's Prince Charles was invested as the Prince of Wales.
- 1989 - The Montreal Protocol, an international treaty, went into effect. It limited the production of ozone-destroying chemicals.