Interview and other notes, letters received, and printed matter, relating to American and British cryptological and electronic
intelligence during World War II. Used as research material for the book by B. F. Smith, The Ultra-Magic Deals and the Most
Secret Special Relationship, 1940-1946 (Novato, Ca., 1993). Includes a National Security Agency official history of World
War II cryptology, declassified under the Freedom of Information Act.