I only visited Booker once but my recollection is the Doug Bianchi's Personal Plane Services and the Neil Williams connection were a significant part of the Booker story.
Interesting post:
Doug Bianchi & Neil Williams
Come to think of it, I blundered into an office trying to find a way into the hangar and there were Ray Hanna and the fellow who was lost in the P-38 at Duxford planning some flying routine. I remember how welcoming they were in spite of my sudden intrusion.
Robert