THE ABRAHAM LINCOLN PRESIDENTIAL LIBRARY
'(<a href="http://www.j-archive.com/media/2011-02-21_DJ_15.jpg" target="_blank">Kelly of the Clue Crew reports from the Abraham Lincoln Presidential Library in Springfield, IL.</a>)  Lincoln signed many important documents in his executive office, including <a href="http://www.j-archive.com/media/2011-02-21_DJ_15.jpg" target="_blank">this</a>, which he called "the central act of my administration and the great event of the 19th century"'
the Emancipation Proclamation