TODAY IN HISTORY

1863

The pivotal, three-day Civil War Battle of Gettysburg, resulting in a Union victory, began in Pennsylvania.

1867

Canada became a self-governing dominion of Great Britain as the British North America Act took effect.

1944

Delegates from 44 countries began meeting at Bretton Woods, New Hampshire, where they agreed to establish the International Monetary Fund and the World Bank.

1946

The United States exploded a 20-kiloton atomic bomb near Bikini Atoll in the Pacific.

1963

The U.S. Post Office inaugurated its five-digit ZIP codes.