On This Day...September 17

1778 - The United States signed its first treaty with a Native American tribe, the Delaware Nation.

1862 - The bloodiest day in U.S. military history: 23,100 were killed, wounded or captured at Maryland in the Civil War battle of Antietam. The Rebel advance was ended with heavy losses to both armies.

1937 - At Mount Rushmore, Abraham Lincoln's face was dedicated.

1939 - The Soviet Union invaded Poland, just 16 days after Germany had invaded Poland.

1983 - Vanessa Williams, as Miss New York, became the first black woman to be crowned Miss America.