The Secret Teachings of All Ages: An Encyclopedic Outline of Masonic, Hermetic, Qabbalistic and Rosicrucian Symbolical Philosophy

Originally published: San Francisco: H. S. Crocker Co., 1928.
A dense encyclopedia and a solid starting point from which to dive into subjects such as the Qabbala, Alchemy, Tarot, Ceremonial Magic, Neo-Platonic Philosophy, Mystery Religions, and the theory of Rosicrucianism and Freemasonry.