Title: Heroes Beneath the Waves
Subjects: Submarines (ships), World war, 1939-1945, naval operations, submarine, World war, 1939-1945, naval operations, american, World war, 1939-1945, personal narratives, american, Korean war, 1950-1953, personal narratives, american, Korean war, 1950-1953, naval operations, Vietnam war, 1961-1975, personal narratives, Vietnam war, 1961-1975, naval operations