Anyone interested in these letters might also be interested in:
R. Parker _John Kenneth Galbraith_ (2005), pp. 483-5, which discusses the way Galbraith used JR's lecture to take action on the position of women in the AEA.
"On the genesis of Post Keynesian economics: Alfred S. Eichner, Joan Robinson and the founding of Post Keynesian economics" Edited by Fred Lee. _Research in the History of Economic Thought and Methodology_, volume 18-C, 2000, pp. 136-42, which contains correspondence between Borts and Alfred Eichner.
Roger Backhouse