January 25, 1950. 
Seflor Don Octavio A. Vallarino, 
Ambassador E. & P., 
Embassy of Panama, 
Washington ,D. C. 
My dear Mr. Ambassador: 
In my coming trip to Panama, about February 1, 
1950, I will be accompanied by Mr. Watson M. Perrygo, 
as assistant. Our mission is purely scientific. If we 
may have your visa on the accompanying special passport 
for Mr. Perrygo it will be appreciated. 
With appreciation of your attention, I am 
Very truly yours, 
A. Wetmore, 
Secretary. 
Ip 
