Book excerpt: From a Pulitzer Prize winner comes the story of an unforgettable moment in American history: the historic meeting between General Robert E. Lee and General Ulysses S. Grant that ended the Civil War. MacKinlay Kantor captures all the emotions and the details of those few days: the aristocratic Lee’s feeling of resignation; Grant’s crippling headaches; and Lee’s request--which Grant generously allowed--to permit his soldiers to keep their horses so they could plant crops for food.