Joel Greenberg

Dr Joel Greenberg is a historian and author specialising in signals intelligence.  He has had three books published in this field.

 

Joel Greenberg has most recently written an anthology of letters between many of the key people associated with the wartime intelligence activities based at Bletchley Park during WW2.  Joel is also the author of the authorised biographies of two key figures in the story of signals intelligence, Gordon Welchman and Alastair Denniston. 
 

The anthology, The Bletchley Park Codebreakers: In Their Own Words, is based on more than one hundred letters, some declassified by GCHQ and others written years after the end of WW2. The book was launched at Churchill College Cambridge on 1 November, 2022. At this event, most of the original material on which it was based and other related artifacts were donated by the author to the Churchill Archives Centre.

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The Denniston book, Alastair Denniston, Code-breaking from Room 40 to Berkeley Street and the Birth of GCHQ, is both a biography and an account of signals intelligence from its early development to the birth of GCHQ. Denniston was the first Head of GCHQ and the book was launched at its headquarters on 7 September 2017 in honour of him.
 

The Welchman book, Gordon Welchman, Bletchley Park’s Architect of Ultra Intelligence, is the basis of a joint BBC/Smithsonian Network 2015 documentary about Welchman –The Forgotten Genius of Bletchley Park.
 

Joel Greenberg received his PhD in Numerical Mathematics from the University of Manchester (UMIST) in 1973.  He worked for the Open University for over 33 years, and held a number of senior management positions at Director level.

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Image: Bletchley Park Codebreakers: In their own words, Joel Greenberg, published by Greenhill Books, October 2022

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