- Gilbert Morris
- Alan W. Watts
- Brian D. McLaren
- Michael Shermer
- Robert Anton Wilson
- Edward Herman
- Robert Shea
- Robert Bauval
- Timothy Leary
- John Thompson
- Adrian Geoffrey Gilbert
- Immanuel Velikovsky
- William Johnston
- Mick Cochrane
- John Dudley Ball
- George Shaffner
- Michael Yardley
- Russell Rhodes
- Arthur Weigall
- Miriam Joan Hill