Portal:United States/Anniversaries/July/July 21
- 1873 – At Adair, Iowa, Jesse James and the James–Younger Gang pull off the first successful train robbery in the American Old West.
- 1899 – Ernest Hemingway, author of such classics of American literature as A Farewell to Arms, For Whom the Bell Tolls, and The Old Man and the Sea, is born.
- 1925 – In Dayton, Tennessee, the Scopes Trial concludes. High school biology teacher John T. Scopes is found guilty of teaching evolution in class and is fined $100.
- 1938 – Janet Reno, the first female United States Attorney General, is born.
- 1969 – Having landed on the moon late the previous day, Neil Armstrong and Buzz Aldrin become the first men to walk on the Moon, as part of the Apollo 11 mission.
- 1997 – The fully restored USS Constitution (pictured), also known as Old Ironsides, celebrates her 200th birthday by setting sail for the first time in 116 years.
On this day for the United States
January • February • March • April • May • June • July • August • September • October • November • December
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Events
- 1861 – American Civil War: First Battle of Bull Run – At Manassas Junction, Virginia, the first major battle of the war begins (Confederate victory).
- 1865 – In the market square of Springfield, Missouri, Wild Bill Hickok shoots Dave Tutt dead in what is regarded as the first true western showdown.
- 1873 – At Adair, Iowa, Jesse James and the James–Younger Gang pull off the first successful train robbery in the American Old West.
- 1877 – After rioting by Baltimore and Ohio Railroad workers and the deaths of nine rail workers at the hands of the Maryland militia, workers in Pittsburgh stage a sympathy strike that is met with an assault by the state militia.
- 1919 The dirigible Wingfoot Air Express crashed into the Illinois Trust and Savings Building in Chicago, killing 12 people.
- 1925 – Scopes Trial: In Dayton, Tennessee, high school biology teacher John T. Scopes is found guilty of teaching evolution in class and fined $100.
- 1931 – CBS's New York City station begins broadcasting the first regular seven days a week television schedule in the U.S.
- 1944 – World War II: Battle of Guam – American troops land on Guam starting the battle (ends on August 10).
- 1961 – Mercury program: Mercury-Redstone 4 Mission – Gus Grissom piloting "Liberty Bell 7" becomes the second American to go into space (in a suborbital mission).
- 1969 – Neil A. Armstrong and Edwin "Buzz" Aldrin become the first men to walk on the Moon, during the Apollo 11 mission.
- 1997 – The fully restored USS Constitution (aka "Old Ironsides") celebrates her 200th birthday by setting sail for the first time in 116 years.
- 2002 – Telecom giant WorldCom files for Chapter 11 bankruptcy protection in the largest such filing in United States history.