Elizebeth Friedman
National Security Agency
Alan Turing
Ramon Andrade 3dciencia
Alan Turing, British Mathematician #1
Bill Sanderson
Enigma Machine
Cordelia Molloy/science Photo Library
Statue Of Alan Turing #1
Martin Bond
Alan Turing, British Mathematician
Bill Sanderson
William Friedman
National Security Agency
Shaun Wylie
A. Barrington Brown, Gonville And Caius College/science Photo Library
Shaun Wylie #1
A. Barrington Brown, Gonville And Caius College/science Photo Library
Alan Turing #1
Gary Brown
Statue Of Alan Turing
Martin Bond
Statue Of Alan Turing
Martin Bond/science Photo Library
Statue Of Alan Turing #2
Martin Bond
Alan Turing Plaque
Martin Bond/science Photo Library
Alan Turing, British Mathematician
Gary Brown