One of, if not the best books about the movie out there. Terminator 2: Judgment Day - The Book of Film: An Illustrated Screenplay came out in 1991, with great introduction by Jim Cameron who wrote it right after the movie debuted in theaters and started gaining its incredible success. Its very well put together by Van Ling, an award winning DVD producer (responsible for many T2 editions, documentaries and special features on DVDs and Blurays) who was Cameron's personal assistant on The Abyss and T2. He also worked at Lightstorm, Cameron's production company and has a very small cameo in T2 in Dyson's lab.
Not only its a screenplay for the film, but also its a book which features alternative and deleted scenes, storyboards and screencaps of the entire movie. But thats not all, the best part is annotations by Van Ling explaining Camerons decisions and changes in the script. Here are just few smaple pages for those who don;t have it. It's widely available for good prices
