Walter Matthew Jefferies (August 12, 1921 – July 21, 2003) was an American aviation and mechanical artist, set designer, and writer. He is best known for his work on the original Star Trek television series, where he designed many of the sets and props, including the original Starship Enterprise, and the bridge and sick bay

After a devastating mid-air collision with a German fighter over North Africa the B-17 bomber “All American” landed safely at a remote desert airfield. It was methodically rebuilt, striped of all armament and flown by a new crew of four. Among these crew members was Matt Jefferies, who served as flight engineer and co-pilot. No longer a bomber, unarmed and incapable of defending itself, the All American was assigned to carry out special secret missions over enemy held territory.

https://memory-alpha.fandom.com/wiki/Matt_Jefferies

https://en.wikipedia.org/wiki/Matt_Jefferies

http://www.mattjefferies.com/