I once amused John Higgs by mentioning that I had a go-to expert on Aleister Crowley. This is no longer true, in the sense that I now have two experts I can consult, as needed.
I love shopping for cheap ebooks and every month I check the books that have gone on sale at Amazon. (Hundreds of books go on sale every month.) When I spotted that Perdurabo, a biography of Crowley by Richard Kaczynski, was available for $1.99, I went ahead and bought it, then checked with my experts for this blog post.
I didn't have to write to Oz Fritz, as I knew he had written about it. Here is his review, and I felt better about my purchase after reading it. Oz wrote, "The blurb on the front of dust jacket says: The definitive biography of the founder of modern magick. Having read the first edition of Perdurabo, and every other biography of this controversial figure, I readily agree."
Oz's 2010 review actually was sparked by the release of a revised and updated edition, and Oz wrote, "Diving into the first chapter, Birthday, it becomes immediately apparent that the factual research of Crowley's life and history is thorough and extensive, bordering on pedantic."
Oz writes that Kaczynski successfully addresses the claim that Crowley was an evil black magician. "That couldn't be further from the truth. However, Perdurabo is a critical account, not a white-washed attempt at spin control of Crowley's legacy."
My other expert is Apuleius Charlton, so I consulted him, too. Apuleius told me, "I have read it, it is fawning and I view it as the antipode to Symonds calumny. [E.g., The Great Beast: The Life and Magick of Aleister Crowley by John Symonds.] Kaczynski is an OTO ideologue. If you want to read a modern bio, everyone loves 'Do What Thou Wilt' (I haven't read it." [Do What Thou Wilt: A Life of Aleister Crowley, by Lawrence Sutin.]
I'm not a magick expert, but I wanted to read a Crowley bio because of his large influence on Robert Anton Wilson.