Yeah, why not make a collection?
I add:
1. U-505 by Rear Admiral (ret.) Daniel V. Gallery. He boarded and captured U-505 in June 1944. The first American officer to capture an enemy warship since 1815. It's his own story. It's the 5th printing in August 1972.
2. U-Boot Kommandant by Captain Guenther Prien. His own story of sinking the Royal Oak at Scapa Flow on August 14, 1939. 2nd printing in February 1976
