Go back to article: Zygalski sheets: Polish codebreaking and the role of reconstruction in the Top Secret exhibition at the Science Museum

Figure 5

Photographs of Zygalski sheet diagram and reproduction sheets

(Clockwise from left to right): Zygalski sheet diagram from Rejewski, M, 1980, ‘An Application of the Theory of Permutations in Breaking the Enigma Cipher’, Applicationes Mathematicae, 16 (4); ‘A Perforated Sheet’ from Garliński, J, 1980, The Enigma war (New York: Scribner), 40; Reconstruction of Zygalski perforated sheets at Bletchley Park, photographed by Toby Oxborrow; and, Reconstruction of Zygalski sheets by Bill Casselman published in American Mathematical Society feature column, 2013