Jon,
Many thanks, that is very cool! I was enthralled by crypto in my teens. The central repository librarians for the state of Arkansas got me a used copy of "Secret and Urgent" which I coveted because it had frequency tables in the back (including trigrams! ;-)
Have Fun!
Reg
On Tuesday, August 31, 2021, 04:06:56 PM CDT, Froggie the Gremlin <jonpaul@...> wrote:
Hello all: My IEEE Spectrum article about a 1963 cipher machine and a huge espionage case Rubicon just went online
about a yers work. Last photo has some HP and TEK equipment.
Your thoughts appreciated!
Jon
