ABOUT RALPH SIMPSON
Ralph Simpson worked in the computer industry for 32 years, at IBM and Cisco Systems. He is now retired and volunteers at a local history museum. He wrote a book on cipher history called, Crypto Wars: 2000 Years of Cipher Evolution. He is also an avid collector of cipher machines, which you can see on his website, CipherHistory.com. Ralph lives in San Jose in a restored Victorian house, which is also home to his Cipher History Museum and a very understanding wife. They have three grown children.