In the case of Abraham Lincoln, the contents of his pockets on the night of his assassination on April 14, 1865, are both revealing and mysterious. There is nothing unusual about some of the things Lincoln carried with him: two pairs of eyeglasses, a lens polisher, a pocketknife, a linen handkerchief, a watch fob and a brown leather wallet. But in the wallet was a $5 Confederate note and nine newspaper clippings. No one can say for sure why Lincoln would have carried a Confederate note, but perhaps he wanted it as a souvenir of an institution that had died in America three days earlier, with the April 11, 1865, surrender of Gen. Robert E. Lee to Gen. Ulysses S. Grant at Appomattox, Va.