One Hundred Modern Poems, selected with an introduction by Selden Rodman (1949)
Walkabout: Life as Holy Spirit by Mark Patrick Hederman
Isis Unveiled Volume 1 by H.P. Blavatsky (1972)
The Allure of Gnosticism edited by Robert A. Segal (1995)
Christianity as Mystical Fact and the Mysteries of Antiquity
by Rudolf Steiner
Theosophy; An Introduction to the Supersensible Knowledge of the World and the Destination of Man
by Rudolf Steiner
How to Know Higher Worlds
by Rudolf Steiner
Integral Spirituality: A Startling New Role for Religion in the Modern and Postmodern World
Ken Wilber
Shambhala (2007), Paperback, 336 pages
Sex, Ecology, Spirituality: The Spirit of Evolution, Second Edition
Ken Wilber
Shambhala (2001), Edition: 2 Revised, Paperback, 851 pages
The Essential Ken Wilber: An Introductory Reader.
Ken Wilber
Shambhala (1998), Edition: 1st, Paperback, 199 pages
