Despite several allegations and speculations to the contrary, there is no evidence of such an encounter.[30] In 1991, John Symonds, one of Crowley's literary executors, published a book: The Medusa's Head or Conversations between Aleister Crowley and Adolf Hitler, which has definitively been shown to be literary fiction.[30] That the edition of this book was limited to 350 also contributed to the mystery surrounding the topic.[30] Mention of a contact between Crowley and Hitler—without any sources or evidence—is also made in a letter from René Guénon to Julius Evola dated October 29, 1949, which later reached a broader audience.[30]