By The Associated Press

Today in History

Today is Tuesday, Aug. 20, the 232nd day of 2019. There are 133 days left in the year.

Today’s Highlight in History:

On August 20, 1986, postal employee Patrick Henry Sherrill went on a deadly rampage at a post office in Edmond, Okla., shooting 14 fellow workers to death before killing himself.

On this date:

In 1862, the New York Tribune published an open letter by editor Horace Greeley calling on President Abraham Lincoln to take more aggressive measures to free the slaves and end the South’s rebellion.

In 1866, President Andrew Johnson formally declared the Civil War over, months after fighting had stopped.

In 1910, a series of forest fires swept through parts of Idaho, Montana and Washington, killing at least 85 people and burning some 3 million acres.

In 1953, the Soviet Union publicly acknowledged it had tested a hydrogen bomb.

In 1955, hundreds of people were killed in anti-French rioting in Morocco and Algeria.

In 1964, President Lyndon B. Johnson signed the Economic Opportunity Act, a nearly $1 billion anti-poverty measure.

In 1968, the Soviet Union and other Warsaw Pact nations began invading Czechoslovakia to crush the “Prague Spring” liberalization drive.