| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1995 | 978-1-885949-00-4 | Dennis Holtje | From Light to Sound: The Spiritual Progression |
| 1999 | 978-1-885949-01-1 | Sri Gary Olsen | MasterPath: The Divine Science of Light and Sound (Vol. 1) |
| 2010 | 978-1-885949-07-3 | '' | MasterPath: Soul's Divine Journey |