Last weekend I found Feng-Hsiung Hsu's book
Behind Deep Blue: Building the Computer That Defeated the World Chess Champion at the local library. If you have any interest in chess or computer chess, I highly recommend it.
It's amazing to me that people still can't accept that Kasparov lost the second match. They say that the Deep Blue team cheated or that he didn't really lose because he resigned too early, or because he made a blunder in the opening of game 6.
Another thing that amazed me is how strong Deep Blue was for the second match. I was thinking that PC software on modern SMP machines would be getting close by now. Nope, not by a long shot.