Sounds like a fascinating set of books! And an expensive
one! (Wish I could afford them, as well...but I doubt I'd be able to, sigh!)
Anyway, my best advice would be to go to www.wikipedia.org and look up "Alestair Crowley". Wikipedia gives very complete information -- and at the end, are often LINKS to even MORE information! (Also, you could just put up the TITLES of the books, and see what Wikipedia has to say about them.) Putting your question into the "Ask.com" search box, could, (maybe!), also yield some interesting results!
Another source for info is www.BloodyRareBooks.com. This website sells rare, (and expensive!), books on mystery and the occult. They also sell rare movie posters. A title or two might seem interesting to you...and if you can't afford them, either go to Amazon.com, Powells.com, or Alibris.com. These sometimes have books at lower prices than BloodyRare has them for, and sometimes they give summaries of the books in their descriptions. OR -- you mihgt want to put the titles of the books up in your Browser, and see what happens!
Hope this works! If you find any magic spells that work in your new books,
please use them ONLY for good! The world REALLY needs help now -- and YEDDA members, it seems, ESPECIALLY want all things to work out well for everyone! (PS: If your wish is to win the Publisher's Clearing House Sweepstakes, please give thought to also asking that I, "Just Me", will win second prize!) : ) : )
Hope this helps!