Abraxas Logo from Hermetic.com
This site called The Hermetic Library is just chocked full of writings featuring Crowley, Thelema, Hermeticism, Gnosticism, Grimoires, and on and on and on. And i am up to page 90 of their Tumblrimage page and it goes on and on and on also. Enjoy the esoterica in word and image!
Image from their Tumblrpage