Interestingly enough, L. Ron Hubbard was a close friend of Aleister Crowley.
Nah, they were aware of each other (Crowley thought Hubbard was a dickhead and I LOATHE Crowley with a passion, but score one for the great beast there) but never actually met, he was however a close friend of Crowley disciple Jack Parsons.
http://io9.gizmodo.com/5978746/the-strangely-true-connection-between-scientology-the-jet-propulsion-lab-and-pagan-sorceryThe evidence I was going off was a statement here by Hubbard claiming Crowley as his close friend and another of his son claiming they knew each other directly.
The anecdote I had heard about the two of them was that they were attempting to summon some kind of malevolent being and claimed that they succeeded.
Hubbard was a chronic liar
https://www.amazon.com/Bare-faced-Messiah-True-Story-Hubbard/dp/0718127641
http://www.cracked.com/article_16337_l.-ron-hubbards-5-most-impressive-lies-besides-scientology.html
Thoughts From The Peacock Angel 