Notes on the Scientific and Religious Mysteries of Antiquity the Gnosis and Secret Schools of the Middle Ages; Modern Rosicrucianism; and the Various Rites and Degrees of Free and Accepted Masonry. John Yarker Secret Society
The most comprehensive and complete esoteric encyclopedia ever written. The sheer scope and ambition of this book are stunning. Magic
The Secret Societies of All Ages and Countries, Vol 1 and 2. Charles William Heckethorn Secret Society