Handwritten letter to Sir Freddie Laker from C. Castle dated February 10, 1971, written on personal letterhead

A personal handwritten letter addressed to Sir Freddie Laker from C. Castle, dated February 10, 1971. The letter appears to be from an aviation enthusiast discussing aircraft and expressing admiration for Laker's work in the airline industry, mentioning model desk planes and aircraft coming over the writer's house.