Michael Rubin, the author of several Mac and editing books, wrote a Lucasfilm/Pixar-centric history of the development of nonlinear editing and computer graphics for film production. The book, Droidmaker, gets rave reviews, as well it should: it’s a great snapshot of the early days of NLEs and CGI, as well as the politics and soap-operatic dramas surrounding them, written by a guy who Was There When It Happened. You can download it for free, and if you want to add a dead-trees copy to your library, you can do that, too. Highly recommended!