The signature of President Abraham Lincoln is seen on a handwritten note, dated July 7, 1863, as it is displayed for the first time at the National Archives in Washington, Thursday, June 7, 2007. The National Archives unveiled the handwritten note by Lincoln exhorting his generals to pursue Robert E. Lee’s army after the battle of Gettysburg, underscoring one of the great missed opportunities for an early end to the Civil War. (AP Photo/Charles Dharapak)