Several books have been written through the years that focus on Star Trek fandom. A couple have made their way into my library.
Star Trek Lives! was published in 1975 and documents the growth of Star Trek fandom following the show's cancellation. My copy is from the 3rd printing and it was purchased on 4 August 1981.
On the Good Ship Enterpirse covers Bjo Trimbles involvement with Star Trek fandom from the time of the letter writing campaign in 1968 to the early 1980s. My copy is from the 3rd printing and was purchased on 14 July 1984.
I purchased this from Bjo at a convention and she signed it for me.