Billboard magazine started ranking sales of recorded songs.
Source
Queen Elizabeth II of England declared the 30th Olympics opened in London, UK.
The US Department of Foreign Affairs, the fledgling nation's first federal agency, was established.
The first recorded example of having to 'quarantine' was written by The Ragusan Republic.
The Geneva Convention on Prisoners of War was signed in Geneva, Switzerland.
The musical 'Little Shop of Horrors' by Alan Menken and Howard Ashman premiered on Broadway at Orpheum Theater, New York, US.