October 18, 1949 
Captain L. D, Snell, USAF 
Office of the Commanding General, 
Headquarters Caribbean Air Command 
Albrook Air Force Base, C. Z. 
Dear Les 
It has been very kind of you to write so 
promptly relative to my inquiry concerning the topographical 
work in Darien. X have the data safely in hand and will write 
presently to the officer you suggest for information. 
fiatibor H&rtmenn who.was with me during April, 
Panamanian born and an excellent naturalist, is now storking 
for Dr. Clark at the Gorges Laboratory in Panama City which, 
I hope, will keep him available to me when X come down 
next year. He is an excellent field man with wide experience 
in the jungle of Panama, though less than 30 years old* 
He is also a pleasant and competent companion under the 
rather trying conditions one often encounters in the field. 
Mr. John Graf, Assistant Secretary of the Smithsonian 
who takes over here as acting head when I am away, is leaving 
Washington Thursday to spend about two weeks in and around 
the Canal Zone principally in an inspection of our laboratory 
at Barro Colorado Island. Mr. Graf is a close friend of the 
Stirlings and an interesting man. I have suggested that he 
call you and ask you and Mrs-Snell to join him for dinner at 
the hotel in Balboa some evening. Professionally he is an 
entomologist but with a wide interest in other branches of 
natural history. 
Sincerely yours. 
A. Wetmore, 
Secretary. 
