Image: from cover of Engine Collectors Journal, issue #144, http://modelenginecollecting.com/collectors-journal.html via http://www.modelenginenews.org/cardfile/kd15.html .
In 1938 “…he became interested in the race cars at the rail track of Tommy and Harry Dooling in nearby Culver City. Watching the Doolings and Dan Bunch running their Dennymite and Brown Jr. powered racers, he thought to himself, ‘I can do better than that!’ In his home shop he built a 10cc engine which he installed in a Bunch car and proceeded to amaze the car buffs. By 1939 he had improved this design and was selling some completed engines, as well as casting sets. These engines were the Crown Champion series.”
Excerpt from http://www.modelenginenews.org/~modeng74//people/atwood.html . Learn more about Bill Atwood at the link and here: https://www.modelaircraft.org/files/AtwoodWilliam.pdf .
Atwood was born in Riverside and lived in the greater Los Angeles area until his death in 1978. He had a notable 50-year history of designing and building model engines.