- The Big Book of Christian Mysticism: The Essential Guide to Contemplative Spirituality
- The Complete Idiot's Guide(R) to Paganism
- The Complete Idiot's Guide to Celtic Wisdom (The Complete Idiot's Guide)
- The New Big Book of Christian Mysticism: An Essential Guide to Contemplative Spirituality
- Answering the Contemplative Call: First Steps on the Mystical Path
- Annice Booth
- Ina Marx
- Philip Brown
- Michael Keiser
- Meletios Webber
- Adam Burke
- Chris Zalewski
- Steven Thomas
- Leah Maggie Garfield
- David E. Caton
- Thomas Dolt
- Thomas Hill Long
- Gray Henry
- Chaim Dalfin
- Wm G. McGinnies
- Marion Noble
- Laurence Urdang Associates
- Great Cosmic Beings
- William McGinnies
- George S. Arundale