23 June History
- 1683 - William Penn signs a friendship treaty with the Lenni Lenape Indians in Pennsylvania.
- 1700 - Russia gives up its Black Sea fleet as part of a truce with the Ottoman Empire.
- 1758 - British and Hanoverian armies defeat the French at Krefeld in Germany.
- 1760 - Austrian forces defeat the Prussians at Landshut, Germany.
- 1848 - A bloody insurrection of workers erupts in Paris.
- 1860 - The U.S. Secret Service is created to arrest counterfeiters and protect the president.
- 1863 - Confederate forces overwhelm a Union garrison at the Battle of Brasher City in Louisiana.
- 1865 - Confederate General Stand Watie surrenders his army at Fort Towson, in the Oklahoma Territory.
- 1884 - A Chinese Army defeats the French at Bacle, Indochina.
- 1885 - Former general and president Ulysses S. Grant dies at the age of 63.
- 1902 - Germany, Austria-Hungary and Italy renew the Triple Alliance for a 12-year duration.
- 1934 - Italy gains the right to colonize Albania after defeating the country.
- 1944 - In one of the largest air strikes of the war, the U.S. Fifteenth Air Force sends 761 bombers against the oil refineries at Ploesti, Romania.
- 1951 - Soviet U.N. delegate Jacob Malik proposes cease-fire discussions in the Korean War.
- 1952 - The U.S. Air Force bombs power plants on Yalu River, Korea.
- 1964 - Henry Cabot Lodge resigns as the U.S. envoy to Vietnam and is succeeded by Maxwell Taylor.
- 1966 - Civil Rights marchers in Mississippi are dispersed by tear gas.
23 June Birthdays
- 1876 - Irvin S. Cobb, U.S. writer, actor, and editor.
- 1894 - Edward VIII, King of England [1936].
- 1894 - Alfred Kinsey, zoologist and sociologist.
- 1910 - Jean Anouilh, French playwright.
- 1912 - Alan M. Turing, English mathematician and pioneer of computer theory.
- 1927 - Bob Fosse, choreographer and director.
- 1940 - Wilma Rudolph, American athlete.
- 1943 - James Levine, pianist and conductor.