1967 - The New York Times reported about a noise reduction system for album and tape recording developed by technicians R. and D.W. Dolby. Elektra Record's subsidiary, Checkmate Records became the first label to use the new Dolby process in its recordings.
1968 - The Soviet Union and other Warsaw Pact nations began invading Czechoslovakia to crush the "Prague Spring" liberalization.
1977 - Voyager 2 was launched by the United States. The spacecraft was carrying a 12 inch copper phonograph record containing greetings in dozens of languages, samples of music and sounds of nature.
1985 - The original Xerox 914 copier was presented to the Smithsonian Institute's Museum of American History. Chester Carlson was the man who invented the machine.
1991 - A rally of more that 100,000 people occurred outside the Russian parliament building to protest the coup that removed Gorbachev from power.
1997 - NATO troops seized six police stations in Banja Luka that had been held by troops controlled by former Bosnian Serb President Radovan Karadzic.
1997 - Britain began voluntary evacuation of its Caribbean island of Montserrat due to the volcanic activity of the Soufriere Hills.
1998 - Canada's Supreme Court announced that Quebec could not secede without the federal government's consent.
1998 - U.S. military forces attacked a terrorist camp in Afghanistan and a chemical plant in Sudan. Both targets were chosen for cruise missile strikes due to their connection with Osama bin Laden.
1998 - The U.N. Security Council extended trade sanctions against Iraq for blocking arms inspections.
2010 - The last American combat brigade exited Iraq after more than seven years after the U.S.-led invasion began.