(Hardcover/dust jacket format of the single volume Winnetou--Book 4 -100th Anniversary- containing expanded text.) Precis: When Old Shatterhand receives invitation letters to a powwow at Mount Winnetou, he is tempted to think that someone is having some fun at his expense; when shortly thereafter a mysterious American with a nugget as large as a pigeon egg on his fob chain visits him, his mind is made up -- Old Shatterhand travels into the Wild West one last time where, unexpectedly, he unearths a secret that has been waiting to be discovered for thirty years.