1. AP US History This Day in American History September 23
1875 – Billy the Kid is arrested for the first time after stealing a basket of laundry. He later broke out of jail and roamed the American West, eventually earning a reputation as an outlaw and murderer and a rap sheet that allegedly included 21 murders.

2. AP US History This Day in American History September 23
1908 – A game between the New York Giants and Chicago Cubs ends in 1-1 tie after a controversial call at second base. The officials ruled that Giants first baseman Fred Merkle was out because he failed to touch second base, a call that has been disputed ever since.

3. AP US History This Day in American History September 23
In a surprisingly low-key and carefully worded statement, President Harry S. Truman informs the American people that the Soviets have exploded a nuclear bomb. The Soviet accomplishment, years ahead of what was thought possible by most U.S. officials, caused a panic in the American government.

4. AP US History This Day in American History September 23
1969 – The trial for eight antiwar activists charged with the responsibility for the violent demonstrations at the August 1968 Democratic National Convention opens in Chicago.