Lyall Watson - Supernature
Aleister Crowley - Sepher Sephiroth
Anton Josef Kirchweger - The Golden Chain Of Homer
Anonymous - The Trinity Is It Christian Or Pagan
Louis Claude De Saint Martin - Tableau Naturel (Preface de Papus) (1900,in French)
William Wynn Westcott - Numbers Their Occult Power and Mystic Virtues