December 15th 1926, 1 page, from Yale University, with the envelope.
"Your name has been given me as one of the rising generation of economists likely to make real contributions to the subject.
"I am writing to you, and a limited number of others interested in economic science, to offer a complimentary copy of what was originally my doctor's thesis of 1892, Mathematical Investigations in the Theory of Value and Prices, a new edition of which was published last year. A few copies are left.
"If you would care to have a copy will you please let me know. The only price of the booklet is that you agree to read it!"
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April 6th 1932, 2 pages, quarto, in ink from Harvard University, Department of Economics, with the envelope.
"Many thanks for sending me offprints of your two very interesting articles.... Couldn't you better say, instead of 'incr. of aggr. dem. curve' something like 'marginal demand curve'. An ordinary demand curve is then a curve of average demand. what you call 'total or aggregate demand' is perhaps better called 'offer'. Bowley speaks of an 'offer curve' and your 'increment of aggregate demand curve' is then the derived function of the offer curve. - But these are only my superficial and terminological remarks...."
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May 29th 1944, 2pages in ink, with the envelope, from the Old Oast House, Cambridge. "I don't think there is one among the various letters I have received about my book that has given me more pleasure than yours --by its kindness as much as by its frankness....
"I of course still disagree with Keynes (whom as a man I admire as much as anyone) on essential theoretical points which are very relevant to future employment policy; and it still seems to me that the outlook of most of you is strongly biased by the unique experience of 1925-9 (just as mine is likely to be biased by the..experience of a major inflation!) and that it is very misleading to apply the lessons of a period of artificial over Valuation of a currency to the problems of choice between fixed and variable exchange rates.
"But I must not try to draw up a catalogue of disagreements. Except for some of the more extreme Keynesians (and Keynes occasionally) it seems that on the problems of policy far-reaching agreement can now be reached..."
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