authorized by Farmer or by Farmer's Estate, such as Tales of the Wold Newton Universe (edited by Win Scott Eckert and Christopher Paul Carey, Titan Books, 2013) and various books published by Meteor House. Going beyond the WNU is Eckert's Crossover Universe, published in book form by Black Coat Press in two volumes in 2010 as Crossovers: A Secret Chronology of the World, in which a massive continuity is created in a "six degrees" game of linked crossover stories. Eckert's Crossover Universe work is being carried forward by Sean Levin. The important distinction between a Wold Newton story and a crossover story is discussed at length by Eckert and Carey in their introduction to Tales of the Wold Newton Universe. List of works Tarzan Alive: A Definitive Biography of Lord Greystoke (1972) Doc Savage: His Apocalyptic Life (1973) The Other Log of Phileas Fogg (1973) Time's Last Gift (1972) Hadon of Ancient Opar (1974) Flight to Opar (1976) Myths for the Modern Age: Philip José Farmer's Wold Newton Universe (edited by Win Scott Eckert, 2005) Crossovers: A Secret Chronology of the World Parts 1 and 2 (2010) Tales of the Wold Newton Universe (edited by Win Scott Eckert and Christopher Paul Carey, 2013) Farmerphile: The Magazine of Philip José Farmer Similar creations An earlier proponent of this sort of fiction was William S. Baring-Gould, who wrote a fictional biography of Sherlock Holmes entitled Sherlock Holmes of Baker Street. In 1977 C. W. Scott-Giles, an expert in heraldry who served as Fitzalan Pursuivant of Arms Extraordinary, published a history of Lord Peter Wimsey's family, going back to 1066 (but describing the loss of the family tree going back to Adam and Eve); the book is based on material from Scott-Giles's correspondence with Dorothy L. Sayers, who wrote at least two of the family anecdotes in the book, one of them in mediaeval French. For details, see Duke of Denver. Warren Ellis's comic book series Planetary has a similar premise of fitting many different superhero, science fiction, and fantasy elements into the same universe. (For the most part, constrained by the needs of the story and copyright, Ellis does not use the originals but rather his own re-interpretations of the archetypes). Author Kim Newman has stated that his Anno Dracula series was partially inspired by the Wold Newton family. The anthology series Tales of the Shadowmen edited by Jean-Marc Lofficier is also