IDIC pendants, all the scripts, even actual film footage from the set. Gene Roddenberry had collectors in mind even as the show was still in its first run.
I bought this book years ago. I had never opened it. When I did, I discovered three major Star Trek autographs.
The Making of Star Trek is one of the most important books in TOS fandom, and Gene Roddenberry was an early advocate of the project.