We know that one of John Berkey's paintings became the foundation for The Deathstar, but his influence might have gone beyond that, into the aptly named B-Wing.
He provided the empire with the ultimate weapon, though he couldn't have known it at the time. His style is uniquely elegant, yet mechanical, and though he would do some work for Star Wars , he never actually saw the films themselves.
Published so rarely that it's never actually been published yet.
May the force be with you.