Crain's or cranes powerlifting website has some great books on it.
There is also another interesting site out there if you are at all interested in how the oldtimers lifted...
Sandow: Historic Photographs of Early Bodybuilders - The Sandow Museum: History of Bodybuilding - A Tribute to Eugen Sandow
Eugen Sandow & The Golden Age of Iron Men
Do yourself a favor and order Dinosaur Training by Stanley Kubrik thats my favorite lifting book...not so much instructional as general lifting theory.