became the standard for English language esotericism in the early 20th century, aptly termed the "Encyclopedia of Initiation" by its principal editor and contributor, Aleister Crowley. This ten volume collection had remarkable variety, depth, and the utility of its contents encompass Qabalah, tarot, yoga, and the essential papers of Crowley's teaching order, A. A. Unfortunately, much of this material is currently out of print. , curated by scholar and U.S. Deputy Grandmaster General of the O.T.O., Lon Milo DuQuette, collects the best of Crowley's material from both inprint and outofprint editions of . For Crowley collectors and the curious alike, this is an accessible, affordable volume packed with high magick and secrets.