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Mary, 
 
This is an inadequate response, but perhaps it 
will help point you in the right direction.  I do not know 
where it first appeared in print, but a certain oral history 
with which I am familiar claims that the prisoner's dilemma 
was first discovered/invented by Albert W. Tucker, who was 
a professor of math at Princeton and the Tucker of the Kuhn- 
Tucker theorem in nonlinear programming, among other things. 
 
Reportedly he did this during the early 1950s while visiting 
at the Rand Corporation and the original context of the idea was 
international arms races and treaty negotiations. 
 
I do not have my hands on it, but a possible source for 
further investigation of this might be the book edited by 
Harold W. Kuhn and Albert W. Tucker, _Contributions to the 
Theory of Games_, vol. II, Annals of Mathematical Studies, 
28, Princeton University Press, 1953. 
 
Barkley Rosser 
James Madison University 
 
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