U.S. Army 1st Lt. Melissa Stockwell (Ret.) (R), who was the first female American soldier to lose a limb in the war in Iraq, recites the Pledge of Allegiance as (L-R) former U.S. first lady Barbara Bush, former President George H.W. Bush, former President George W. Bush and former first lady Laura Bush look on during the opening ceremony of the George W. Bush Presidential Center April 25, 2013 in Dallas, Texas. The Bush library, which is located on the campus of Southern Methodist University, with more than 70 million pages of paper records, 43,000 artifacts, 200 million emails and four million digital photographs, will be opened to the public on May 1, 2013. The library is the 13th presidential library in the National Archives and Records Administration system.