From Kook Science
Merlin Edward "Ed" Pettit (June 16, 1911 - July 2, 1991) was an American safety engineer and inventor who developed robotic automata in the early 1970s and later became interested in pyramid power, co-authoring (with Bill Schul) three books on the subject.
- Schul, Bill; Pettit, Ed (1975), The Secret Power of Pyramids, Fawcett Gold Medal, https://amzn.to/2aBYnCw
- Schul, Bill; Pettit, Ed (1976), The Psychic Power of Pyramids, Fawcett Gold Medal
- Schul, Bill; Pettit, Ed (1979), Pyramid Power: A New Reality, Walpole: Stillpoint
- Prince, Annette, "Playing with Roby and Droopy: Oklahoma City robot inventor has made children's laughter his hobby", Daily Oklahoman (Oklahoma City, OK): 24, 26, 12 Nov. 1972, https://www.newspapers.com/newspage/452404565
- "UFO Meeting Told of Power Of Pyramids", Wichita Eagle (Wichita, KS): 22A, 24 May 1973, https://www.newspapers.com/newspage/695727425