Just started reading "United States Submarine Operations in World War II" by Theodore Roscoe. Got it from my local library. It's pretty good, but it has obviously seen a lot of use. As far as I can tell its an original edition from 1949, and unfortunately sometime between then and now someone ripped page 16 out of the book because it had a schematic of a Gato-class submarine on it. That's one page so far I didn't get to read