Lewin, Ronald. Ultra Goes to War: The Secret Story. London; Hutchinson; Barnsley: Pen & Sword, 1978, 1988, 2008, 398 pp. Extraordinary; no leaks & no mention until 1974.
© 2005-2025 Centre for Maritime Historical Studies, University of Exeter (v1.0.0)
Hosted by the Digital Humanities Lab, Exeter