Mineralogy and Petrology, 
February 21, 1939 
Dear Doctor Wetmore: 
Many thanks for your appropriation to 
Mr. Simson. I hope it will lead to something definite. 
On your trip to Mexico, will you have occasion 
to go to Mexico City? If so, you can do me a great 
favor by paying a short informal visit to the Instituto 
de Geologico. Sr. Ing. Manuel Santillan is the Director. 
He is the "bad man" of the oil industry. (Picture attached) 
The Assistant Secretary of the Smithsonian Institution 
"Mas grande in todo Mundo", will need no introduction. 
Respectfully yours, 
Curator 
Doctor A. Wetmore, 
Assistant Secretary, 
U. S. National Museum 
