In this Wednesday Feb. 13, 2013 photo, construction continues on the George Washington Library in Mount Vernon, Va., part of George Washington’s historic Mount Vernon estate. (AP Photo/

 

              In this Wednesday Feb. 13, 2013 photo, construction continues on the George Washington Library in Mount Vernon, Va., part of George Washington’s historic Mount Vernon estate. (AP Photo/
In this Wednesday Feb. 13, 2013 photo, construction continues on the George Washington Library in Mount Vernon, Va., part of George Washington’s historic Mount Vernon estate. (AP Photo/Jacquelyn Martin)