Stairway to Heaven: Chinese Alchemists, Jewish Kabbalists, and the Art of Spiritual Transformation: Peter Levenda: Books

I haven't read it yet, but I am a big fan of Levenda's and hope to get around to it soon.
Amazon.com: Stairway to Heaven: Chinese Alchemists, Jewish Kabbalists, and the Art of Spiritual Transformation: Peter Levenda: Books