Cosmic Consciousness: A Study in the Evolution of the Human MindWritten and edited by Richard Maurice Bucke
From India to the Planet Mars: A Study of a Case of Somnambulism with GlossolaliaThéodore Flournoy; translated by Daniel B. Vermilye
The Secret of the Golden FlowerChinese text translated and explained in German by Richard Wilhelm; European commentary by C. G. Jung; English translation by Cary F. Baynes
