http://www.bluejacket.com/index_navy.html
http://www.navsource.org/archives/02idx.htm
http://www.hazegray.org/features/
http://www.hazegray.org/danfs/
http://www.history.navy.mil/branches/org11-2.htm
http://www.steelnavy.com/essex_data.htm
http://www.steelnavy.com/features.htm
http://www.uboatarchive.net/Uboatlist.htm
There are other more obscure sites that I've found, as well.
Sometimes scanned out of Squadron or other reference books.
I know I'm a nut about Naval Aviation, but I sure enjoy it!

JimBob