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Figure This!
Books Books

Doyle, A. C. The Complete Sherlock Holmes. New York, NY: Doubleday, 1953.

Poe, E. A. Tales of Edgar Allan Poe. York, PA: Random House. 1944.

Sinkov, A. Elementary Cryptanalysis. Washington, DC: Mathematical Association of America, 1968.

Games. Ambler, PA: Games Publications, Inc.

 

Letter Frequencies
www.vindustries.com/letterfreq/

Enigma Machine - Applet
russells.freeshell.org/enigma/

Enigma Machine - History
www.nsa.gov/museum/museu00007.cfm

Enigma Puzzle
wordzap.com/enigma

Breaking Codes
www.teachingtools.com/GoFigure/Password.htm
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