eurocrypt
http://frode.home.cern.ch/frode/crypto/ http://intellit.muskingum.edu/intellsite/uk_folder/ukwwiiultrabp.html http://home.us.net/~encore/Enigma/links.html http://www.nsa.gov/museum/enigma.html http://www.a-ten.com/alz/aturing.htm http://www.pbs.org/wgbh/nova/decoding/mind3.html http://www.codesandciphers.org.uk/