- Graham Hancock
- Robert Bauval
- Adrian Geoffrey Gilbert
- Sandra Worth
- Immanuel Velikovsky
- R.A. Gilbert
- R.H. Charles
- Jacques F. Vallée
- Hershel Shanks
- David Hatcher Childress
- Damon Wilson
- John Schaeffer
- Stanton T. Friedman
- William L. Moore
- Patrick Sweeney
- John Anthony West
- Rene Noorbergen
- Walter Sullivan
- Peter Kolosimo
- Livio Catullo Stecchini