http://www.history.com/this-day-in-history/building-of-hoover-dam-begins

http://www.history.com/this-day-in-history/althea-gibson-is-first-african-american-to-win-wimbledon

http://www.history.com/this-day-in-history/bikini-introduced

http://www.history.com/this-day-in-history/u-s-declares-independence

http://www.history.com/this-day-in-history/battle-of-gettysburg-ends

http://www.history.com/this-day-in-history/johnson-signs-civil-rights-act

http://www.history.com/this-day-in-history/hong-kong-returned-to-china

http://www.history.com/this-day-in-history/gone-with-the-wind-published

http://www.history.com/this-day-in-history/u-s-space-shuttle-docks-with-russian-space-station

http://www.history.com/this-day-in-history/workers-assemble-first-corvette-in-flint-michigan