Like most anything else, there is a ton of info about submarines on the internet. Here are just a couple of the many links pages available that I have used in the past: Links to WW2 Submarine Pages (Pacific Theater) and Sid's Submariner Info Page. I would imagine that somewhere out there would be someone who knows what you'd like to know (and who might like some of the NPR info in return). Just start digging.

As a small example that was of great interest to me, here is a little info from subnet.com about The USS Blower, SS-325. Not really a lot there, as it entered the war quite late, and encountered no significant action, but still, I found it helpful. I have always especially liked the picture, which I think sets a perfect mood. Whether my brother is among the men on deck, I have no way of knowing, as I did not find the picture until after he was gone.