It is the 42nd day of the year, with only 323 days remaining until the new year.
1531 - Henry VIII of England is recognized as supreme head of the Church of England.
1752 - The Pennsylvania Hospital, the first hospital in the United States is opened by Benjamin Franklin.
1790 - The Religious Society of Friends, also known as Quakers, petitions Congress for abolition of slavery.
1808 - Jesse Fell burns anthracite coal on an open grate as an experiment in heating homes with the substance.
1861 - The United States House of Representatives unanimously passes a resolution guaranteeing noninterference with slavery in any state.
1938 - BBC Television produces the world's first ever science fiction television program, an adaptation of a scetion of the Karel Capek play R.U. R., that coined the term robot.
1939 - A lockheed Xp-38 flies from California to New York in 7 hours and 2 minutes.
1942 - The first gold record is presented to Glenn Miller for "Chattanooga Choo Choo."
1973 - The first release of American prisoners of war from Vietnam takes place.
1990 - Nelson Mandela is released from Victor Verster Prison outside Cape Town, South Africa, after 27 years as a political prisoner.
1997 - Space Shuttle Discovery is launched on a mission to service the Hubble Space Telescope.