American Express Co. raris
Oct, 20 '49
Dr. Robert Mertens Senckenberg Museum
uear Rr. Mertens,
Many tdanks Tor your letter, and i'or your tdougntfulness ln senüing it on to Kr. Ludwig Lrotz. I am writin^ to nim today.
I shall nope to see you in Senckenberg wnen I cometo ü'rankfort, wnicn will be early m November.
Simeerely yours