September 9, 1939
Dear Professor Taylor:
I was very much interested in your paper in the May Journal on the Dehydrogenation of Cyclotene.  I am taking the liberty of enclosing an old reprint in view of your conclusion that Willstatter probably did not obtain cyclooctatetraene.  While it is quite probable the earlier catalytic experiments did not result in this substance, they later, with Waser and myself certainly gave us the expected compound.
With kindest regards,
Sincerely yours,
Michael Heidelberger