Masters of Wisdom: the Mahatmas, Their Letters, and Path

Helena Blavatsky and the Masters of Ancient Wisdom: Occult Visionary Her Connection to Mahatmas

Masters and Miracles: Wisdom Experience on the Spiritual Path

the Living Yoga: Philosophy, Practice & Path of Masters (Spiritual Wisdom)

the Wisdom of Abraham Abulafia: Ecstatic Kabbalah, Sacred Letters, and Path to Inner Illumination