D.O. · D. Olson · D.W. · Dale William Olson
| title | ISBN-13 | year of publication |
|---|---|---|
| Knowing Your Intuitive Mind | 978-1-879246-00-3 | 1990 |
| The Pendulum Bridge to Infinite Knowing: Beginning Through Advanced Instruction | 978-1-879246-08-9 | 1997 |
| The PENDULUM Bridge to Infinite Knowing: Beginning Through Advanced Instruction • Complete With Pendulum Charts | 978-1-879246-09-6 | 2011 |
| The Pendulum Charts: Knowing Your Intuitive Mind | 978-1-879246-02-7 | 2004 |