DEERFIELD- On April 14, 148 years ago, President and Mrs. Abraham Lincoln left the White House to attend the play "Our American Cousin" at Ford's Theater. Lincoln had sent his bodyguard, Ward Hill Lamon, to Richmond on April 11 and therefore he was unable to accompany the First Family that evening. Lamon had warned Lincoln not to attend the event. Why did Lamon tell Lincoln not to go? Why did Lincoln attend anyway?