Opus Mago-cabbalisticum Et Theosophicum: In Which The Origin, Nature, Characteristics, And Use Of Salt , Sulfur and Mercury are Described in Three Parts Together with much Wonderful Mathematicalâ€|
"For the modern student of the Western Mystery Traditions, it is impossible to overestimate the importance of von Welling's work. Its influence can be traced through the doctrines and teachings of a host of European esoteric institutions--even those that helped give birth to the Golden Dawn and the Modern Occult Revival."--Lon Milo DuQuette