36 books • 2 series
Hitler's U-Boat Bases
What Britain Knew and Wanted to Know About U-boats (U-boat Archive S., v. 1)
U-boats in Camera
U-boats at War
Enigma U-Boats
The German Navy Handbook, 1939-1945
U-boat Commanders and Crews
U-Boat Command and the Battle of the Atlantic
Fuehrer Conferences on Naval Affairs, 1939-1945
German Navy in World War II
German Navy in World War Two
U-boats Under the Swastika