Before Bletchley Park: The Codebreakers of the First World War

by Paul Gannon

Book Overview

The story of Bletchley Park's codebreaking operations in the Second World War is now well known, but its counterparts in the First World War - Room 40 & MI1(b) - remain in the shadows, despite their... This description may be from another edition of this product.

• Format: Paperback
• Language: English
• ISBN: 1803990066
• ISBN13: 9781803990064
• Release Date: March 2023
• Publisher: History Press
• Length: 352 Pages
• Weight: 1.58 lbs.
• Dimensions: 1.1" x 6.1" x 9.1"