H.P. Lovecraft's Magickal Realism
"Secondary occult sources for Lovecraftian magic include three different "fake" editions of the Necronomicon, a few rites included in Anton LaVey's The Satanic Rituals, and a number of works by the loopy British Thelemite Kenneth Grant. Besides Grant's Typhonian O.T.O. and the Temple of Set's Order of the Trapezoid, magical sects that tap the Cthulhu current have included the Esoteric Order of Dagon, the Bate Cabal, Michael Bertiaux's Lovecraftian Coven, and a Starry Wisdom group in Florida, named after the nineteenth-century sect featured in Lovecraft's "Haunter of the Dark." Solo chaos mages fill out the ranks, cobbling together Lovecraftian arcana on the Internet or freely sampling the Mythos in their chthonic, open-ended (anti-) workings."