Ronnie Pontiac was the personal research assistance for Manly P. Hall at the Philosophical Research Society in Los Angeles. He is author of American Metaphysical Religion: Esoteric and Mystical Traditions of the New World.

Kiran Kumar Salagame, PhD, is former chairman of the psychology department at the University of Mysore, India. He is also vice-president of the International Transpersonal Association. He is author of The Psychology of Meditation: A Contextual Approach.