If we're keeping track of Twain in popular culture, let's not forget the Riverworld series of novels by Philip Jose Farmer in which a resurrected Sam Clemens builds a fabulous riverboat and pursues and is pursued by his archenemy King John (the English one) along a zillion-mile river in a galaxy far away accompanied by the resurrected Sir Richard Burton (the Victorian one), Hermann Goring, and a cast of every human being ever born (and resurrected). Gerald