The Secret Teachings of All Ages is truly an encyclopedic volume, richly illustrated with masonic, hermetic, qabbalistic and rosicrucian symbolism (the illustrations are breathtaking) and philosophical interpretations.
While the book covers wide range of topics, it essentially follows the path of Western esoteric traditions - all the way back from Egypt and Greece, through the famous European alchemists (St. Germain and Nicholas Flammel), and onward to Rosicrucians - as can be expected from the title, but it briefly touches upon symbolism from Islam and Amrican Indian symbolism.