Necronomicon, where art thou?

Many people have wondered whether or not the Necronomicon is a real or fiction piece of arcane literature, and I'm here to tell you now, no, it isn't. But the Necronomicon has fueled science-fiction, fantasy, and pop culture decades after the infamous book was first mentioned in Lovecraft's 1922 short story (although published in 1924) "The Hound". Much of the origin to the tale of the Necronomicon can be found in David E. Schultz's and S.T. Joshi's An H.P. Lovecraft Encyclopedia. In this book, the authors claim that the inspiration came to create an untouchable arcane text may have come from Robert Chambers' collection of short stories The King in Yellow (Chambers' book of short stories is also said to have heavily influenced Stephen King's Dark Tower series) The tales in this book refers to a largely unprovided text that drives the protagonists of the subsequent tales hopelessly insane. While this seems to be a sound theory, Joshi and Schultz concede that there is evidence that Lovecraft wasn't even aware of Chambers' work until 1927.
The hoax of authenticity continued largely due to Lovecraft's allowance of other authors using Lovecraftian mythology and alleged texts to give breadth to the universe. After Lovecraft's death a book was published with the unimaginative title A History of the Necronomicon which traces the arcane text's origins from its "authorship" by the Mad Arab Abdul Alhazred in 738, to the banning of the Latin and Greek translations by Pope Gregory IX in 1232, to its English translation by real life Elizabethan magician, John Dee.
Further proving the book's lack of authenticity, Lovecraft once wrote in a letter to friends Jim Blish and William Miller, Jr., "if anyone were to try to write the Necronomicon, it would disappoint all those who have shuddered at cryptic references to it" (Joshi & Schultz). But the effect the book has had on popular culture, and cinema especially, is something that is very true. Even films that have no direct link with Lovecraft place themselves squarely in his universe by using the book. As I'm sure we all remember, the Evil Dead series uses the book at great length and is continuously a part of Ash's adventures. Not many people remember that it is the Necronomicon that enables Jason Voorhees to continually cheat his own death as it is implied in Friday the 13th Part 2(the book is seen in Jason's basement in Jason Goes to Hell). These are just a couple of films touched by Lovecraft and his mythos that aren't based on his books, obviousluy there is a wide catalog based specifically on his writings (The Dunwhich Horror, Dagon, Re-Animator). Hopefully this will shed some light on the fake text, but very real effect Lovecraft's Necronomicon has had in Cinema.