4 April 1968 April 3, 2016 Author: Staff NASA launches Apollo 6. Famous Words of Inspiration..."Opportunity is missed by most people because it comes dressed in overalls and looks like work." Thomas Edison — Click here for more from Thomas Edison Related posts: 4 April 1968 8 October 1968 14 October 1968 21 January 1968 30 June 1968 1 July 1968 24 September 1968 6 March 1968 1 July 1968 30 September 1968 Categories: History Tags: 1968, 4 April