Book suggestions ?

I'm just getting back into machining ( my only real experience was
many years ago in high school) and am also enjoying learning about
CNC. I find that there seems to be a lack of good books on the
subject. Perhaps it's just that the local bookstores don't stock
anything. I have the big book that Sherline publishes.

Can anyone suggest any books or sources for books. I just bought a
rotary table and something specific to that would be really nice too.