From what I've found, there isn't a lot out there on the Tambor-class submarines from WWII in specific.
For a great overall read of the whole shebang, try "Silent Victory: The US Submarine War Against Japan" by Clay Blair Jr.
There is an upcoming book by Bob Hunt coming out in the Spring of 2009. Bob was a torpedoman on 12 of the USS Tambor's (SS-198) patrols. It has to be some kind of record or something. "We Were Pirates, Robert Hunt: A Torpedoman's View of the Pacific War" by Robert Schultz and James Shell is the name.
http://www.robertschultz.us/nonfiction_wwp.htm
For info on the web,
http://www.pigboats.com/ is a great place for unique information. Also, if you want to see JANAC records for each sub (in detail) look at
http://www.ibiblio.org/hyperwar/Japa...-Losses-6.html for lots of info.
For a really great experience, visit a submarine museum. There are around 26 submarine museum boats across the USA, and around 16 of those were part of WWII. You have a choice of 6 Gato, 8 Balao, and 2 Tench class subs to visit. Sadly there are no Tambor class subs anymore (at least not in this country). If you've never visited a submarine museum, you'll be amazed when you do!