Incoming Resources
- U-boat, Richard Humble
- The burning shore, how Hitler's U-boats brought World War II to America, by Ed Offley
- Chamber divers, the untold story of the D-Day scientists who changed special operations forever, Rachel Lance
- Fatal dive, solving the World War II mystery of the USS Grunion, by Peter F. Stevens
- Escape from the deep, the epic story of a legendary submarine and her courageous crew, Alex Kershaw
- The Mathews men, seven brothers and the war against Hitler's U-boats, William Geroux
- Black May, Michael Gannon
- The burning shore, how Hitler's U-boats brought World War II to America, Ed Offley
- Shadow divers, the true adventure of two Americans who risked everything to solve one of the last mysteries of World War II, Robert Kurson
- Iron coffins, a personal account of the German U-Boat battles of World War II, Herbert A. Werner
- Attacked at sea, a true World War II story of a family's fight for survival, Michael J. Tougias, and Alison O'Leary