Campbell, Joseph, The Hero with a Thousand Faces

Fox, Emmett, Power Through Constructive Thinking, and other books by Fox

Khan, Hazrat Inayat.  The Gayan

The Kyballion

Ouspenski, A New Model of the Universe

Watts, Alan, On the Taboo Against Knowing Who You Really Are, and other books by Watts

Zuckhov, Gary. The Dancing Wu-Li Masters