Eliphas Levi - The Paradoxes Of The Highest Science
Papus - Grimorium Saturni (Traite Elementaire de Science Occulte)
Sepharial - The Science of Foreknowledge
Winfield Nevins - Witchcraft in Salem Village in 1692 Together With Some Account Of Other Witchcraft Prosecutions
Franz Hartmann - Secret Symbols of the Rosicrucians
Eduard von Hartmann - Geschichte der Metaphysik (1899,in German)