How the ultra secret was nearly revealed: [This booklet, which is based upon a Bletchley Park Lecture given in January 1998, describes three situations that came very close to revealing the Allies most precious secret in World War II, the ULTRA intelligence based on the decryption of the German Enigma cipher messages]
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Bibliographic Details
Main Author: Gallehawk, John (Author)
Format: Book
Language:English
Published: Milton Keynes Bletchley Park Trust 2011
Edition:New ed.
Series:Bletchley Park Trust report 10
Subjects:
Item Description:Includes bibliographical references
Physical Description:24 S. Ill., Kt. 21 cm

There is no print copy available.

Interlibrary loan Place Request Caution: Not in THWS collection!