Coca-Cola patents its iconic contoured bottle, Al Capone leaves prison, Luke and Laura get married, Harry Potter makes his movie debut, and Prince William and Kate Middleton announce their engagement, all on this day.
23 / 37
Ryan McFarland/Wikimedia Commons
1973: U.S. President Richard Nixon signs the Trans-Alaska Pipeline Authorization Act into law, halting all legal challenges and authorizing the construction of the Trans-Alaska Pipeline System.