This is a great piece of history. The late Professor Mike Driscoll of MIT, known for his work on fission breeding (where more fuel is produced than is consumed – go figure!) asked the question of the origins of the word “breeder” to Dr. Alvin Weinberg. This is Dr. Weinberg’s response with Dr. Eugene Wigner’s handwritten addition. 12 April 1976.
The Thorium Network 