NEW YORK -- A souvenir copy of the Emancipation Proclamation autographed by Abraham Lincoln sold for $688,000 Tuesday at an auction of American artifacts collected by the late publishing magnate Malcolm Forbes. The text is believed to be one of about 15 surviving copies of an oversize printing of the proclamation made by a pair of Philadelphians in 1864 to raise money for war relief. The Emancipation Proclamation freeing the slaves in the Confederate states was issued in 1863. Christie's auction house declined to identify the buyer but said it was a New York-based dealer. It had estimated that the...