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Chris Christensen
Northern Kentucky University
Recruiting and Training Mathematicians as
Codebreakers
World War I
The Polish Cipher Bureau
The Government Code & Cypher School
The Search for “Cipher Brains”
Recruitment
I was teaching at the University of Minnesota; teaching mathematics. I tried to devise a crypt system … So I wrote to the Navy … Well, they didn’t need any more crypt systems, but they did need someone who had some ability as a analyst, and would I be interested in taking their crypt course?
Howard Campaigne
Recruitment
J. J. Eachus was a mathematics PhD from the University of Illinois. At the time of Pearl Harbor he was teaching at Purdue University-Indianapolis and as sort of a hobby he took a Navy correspondence course in cryptanalysis.
Recruitment
[Bill Wray and I] took a Navy course in cryptanalysis which had no connection with the college [Williams college]. I had to drop it because of heavy administrative duties but Bill completed it apparently very successfully. … I assume that the Navy was interested in recruiting mathematicians. There was no regular text – merely mimeographed material on methods of coding and decoding messages – substitution, transposition, etc., with exercises on each lesson. I would say there were about 12 lessons.
Donald E. Richmond
April 6, 1982
Recruitment
The Correspondence Course
Assignment 3Numerical Cipher Alphabets
Assignment 3, Problem 2
Justice John Paul Stevens
Mathematicians
Alfred Clifford(Top, 1)
Marshall Hall, Jr.(Middle, 2)
Andrew Gleason(Middle, 5)
National Security Agency
Cipher Brain?http://www.nku.edu/~christensen/