THE FOREIGN SERVICE 
OF THE 
UNITED STATES OF AMERICA 
Panama, R.P., April 19, 1950 
MAILING ADDRESS: Box 2016, Balboa, 
Canal Zone. 
AIR MIL 
I APR 211960 
Dear Dr. Wetmore: 
It was very thoughtful of you to write me your 
letter of April 13 saying that your expedition had 
been successful and explaining why we did not have 
the pleasure of seeing you again before your departure. 
We are learning to use the Field Book of Birds and 
thank you again for your generosity in no vi ding us 
with this copy. 
With warm regards, and looking forward to seeing 
you upon your return to Panama, which we hope will be 
soon. 
Dr. A. Wetmore, Secretary, 
Smithsonian Institution, 
Washington 25, D. C 
