Samuel Langhorne Clemens, a/k/a Mark Twain, had a huge influence on WC as a young man. In particular his later works, stuff like The Mysterious Stranger, “The Man Who Corrupted Hadleyburg,” Letters from Earth and A Pen Warmed Up in Hell have an obvious impact on WC’s writing even today. Twain’s critical essay on James Fenimore Cooper, “Cooper’s Literary…