Solve One of the Last Mysteries of World War II. Random House Publishing. Möller, Eberhard and Werner Brack (2006) The Encyclopedia of U-Boats: From 1904 to the Present, O'Connor, Jerome M. (June 2000) "Inside the Grey Wolves' Den." Naval History. The US Naval Institute Author of the Year feature describes the building and operation of the German U-boat bases in France. Preston, Anthony (2005) The World's Greatest Submarines. Stern, Robert C. (1999) Battle Beneath the Waves: U-boats at war. Arms and Armor/Sterling Publishing. . Showell, Jak Mallmann (2006) The U-boat Century: German Submarine Warfare, 1906–2006, van der Vat, Dan (1988) The Atlantic Campaign. Harper & Row. Connects submarine and antisubmarine operations between World War I and World War II, and suggests a continuous war. Von Scheck, Karl. U122: The Diary of a U-boat Commander. Diggory Press, Georg von Trapp and Elizabeth M. Campbell (2007) To the Last Salute: Memories of an Austrian U-Boat Commander Westwood, David (2005) U-Boat War: Doenitz and the evolution of the German Submarine Service 1935–1945, Werner, Herbert. Iron Coffins: A Personal Account of the German U-Boat Battles of World War II, External links U-112 and U-53 Submarine Collection at Dartmouth College Library 01 Submarines of Germany Submarines of the Imperial German Navy Submarines of the Kriegsmarine German Empire in World War I Germany in World War II Submarines by type World War I submarines World War II submarines