Aug 15th 1926
PROF. DR. FREUD WIEN IX., BERGGASSE 19

Dear Dr Burrow

I am always interested in your publications.  I see you are grappling with an important, still unsolved problem, but I have made no progress in understanding how you manage it.  A plain and clear description of the way your laboratory-method is performed, would help me more than all your theoretical speculation and your reference to the Theory of Relativity which to me seems out of place.

Sincerely yours
Freud