iest literary work by the esteemed Manly P Hall, one of the foremost mystics of his era- one that stretched on for more than half a century.Speaking of the Rosicrucians, Masons, Arthurian legend, ancient Egypt, and essentially being an explanatory endeavor aimed at the symbolism of mystery traditions, this text is one of the most important occult works of the 1920s. Both the book and its author would go on to shape the spiritual movements of the subsequent century. Fully Illustrated.