Four of the conspirators, from left, Mary Surratt, Lewis Powell, David Herald, and George Atzerodt, in the last moments before their hangings at the Old Navy Yard. (Library of Congress)
Four of the conspirators, from left, Mary Surratt, Lewis Powell, David Herald, and George Atzerodt, in the last moments before their hangings at the Old Navy Yard. (Library of Congress)