Mrs Joan Robinson,
62a Grange Road,
Cambridge.
Dear Mrs Robinson,
Thank you very much for your letter of December 11,
I am glad you agree on the acceleration principle.
Thank you very much also for your off-print on Harrod;
I read the article upon its appearance and found it considerably clearer
than Harrod's book. It much increased ray appreciation for the book.
is ready.
I shall be glad to get your long-Period paper when it
Yours very sincerely.