President Abraham Lincoln's Gettysburg Address is carved into the stone in the Lincoln Memorial for tourists visiting at moonrise and sunset on the National Mall in Washington, DC on June 22, 2013. UPI/Pat Benic
Guests view a copy of the Gettysburg Address, hand written by Abraham Lincoln, which is on display at the National Museum of American History in Washington on November 19, 2008. (UPI Photo/Roger L. Wollenberg)
Pictured is the Eternal Light Peace Memorial in Gettysburg, Pennsylvania, dedicated by President Roosevelt in July 1938. Its gas flame burned almost continuously for 35 years until the energy crisis forced the National Park Service to snuff it out in 1973. (UPI Photo/Files)
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