Author

Joel Greenberg

Joel Greenberg is an author and historian who researches and writes about signals intelligence and its impact on two world wars. He is the author of _Gordon Welchman, Bletchley Park’s Architect of Ultra Intelligence_. His book is the basis of a joint BBC/Smithsonian Network 2015 documentary about Welchman – _The Forgotten Genius of Bletchley Park_.

Books by the Author

Alastair Denniston
The Bletchley Park Codebreakers in Their Own Words
Gordon Welchman
Top Secret Ultra