Since 1971 Gateways as offered books on consciousness, metaphysics, self-transformation, inner work, the fourth way, transpersonal
psychology, spiritual gaming, Judaica, and Afterlife Adventures.
The Master Game
by Robert S. de Ropp
The ground-breaking 70's study of the varieties of yoga and meditation available in the West. De Ropp's eye-opening book still holds up well as the report of a scientist exploring the possibilities of consciousness.