Anything in particular you want to read about? Training programs, training theories, history of "the game"?
In addition to what's already been suggested, I'll point out:
Building the Classic Physique the Natural Way by Steve Reeves
Unleashing the Wild Physique by Vince Gironda
The Development of Physical Power by Arthur Saxon
Brother Iron, Sister Steel by Dave Draper
Fitness is Religion: Keep the Faith by Ray Kybartas
In Defense of Food: An Eater's Manifesto by Michael Pollan