On this day in 1950, Pakistan joined the International Monetary Fund and the International Bank.
On this day in 1960, To Kill a Mockingbird by Harper Lee was first published in the United States.
On this day in 1979, America's first space station, Skylab, was destroyed as it re-enters the Earth's atmosphere over the Indian Ocean.
On this day in 2012, astronomers announced the discovery of Styx, the fifth moon of Pluto.