1815: Napoleon Bonaparte escaped from exile on the island of Elba.
1919: President Woodrow Wilson signed a congressional act establishing Grand Canyon National Park in Arizona.
1952: Prime Minister Winston Churchill announced that Britain had developed its own atomic bomb.
1970: National Public Radio was incorporated.
1993: A truck bomb built by terrorists exploded in the parking garage of New York's World Trade Center, killing six people.
2013: A hot air balloon burst into flames over the ancient Egyptian city of Luxor and plummeted 1,000 feet to earth, killing 19 tourists.