Image:Biuro Szyfrów ( Palac Saski ) 10.jpg

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Description

The Saxon Palace, in Warsaw, where German Enigma ciphers were first broken by Biuro Szyfrów (1932).
Source

Budownictwo Wojskowe, Warszawa,
Date

1935
Author

?
Permission

Public Domain
Public domain This image is in the public domain because according to the non-retrospective copyright law of July 10, 1952, of the People's Republic of Poland , all photographs by Polish photographers published before the law was changed on May 23, 1994 without a clear copyright notice are assumed public domain. This applies worldwide.
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