"You've got to ensure that the holders of an opinion, however unpopular, are allowed to put across their points of view." Betty Boothroyd
April 27th, 1967 Expo 67 officially Opens in Montreal, Quebec with a large opening ceremony broadcast around the world. it opens to the public the next day.
April 27th, 1981 Xerox PARC introduces the computer mouse.
April 27th, 1992 Betty Boothroyd becomes the first women to be elected Speaker of the British House of Commons in its 700-year history