UNITED STATES NATIONAL MUSEUM 
BUREAU OF AMERICAN ETHNOLOGY 
ASTROPHYSICAL OBSERVATORY 
NATIONAL ZOOLOGICAL PARK 
ALL CORRESPONDENCE 
SHOULD BE ADDRESSED 
TO THE SECRETARY 
SMITHSONIAN INSTITUTION 
Washington, IZS.A. 
NATIONAL GALLERY OF ART 
NATIONAL COLLECTION OF FINE ARTS 
FREER GALLERY OF ART 
INTERNATIONAL EXCHANGES 
DIVISION OF RADIATION AND 
ORGANISMS 
January -1 H 19 44. 
Dr* A. Wetmore, 
Assistant Secretary, 
Smithsonian Institution. 
Dear Dr. Wetmore: 
On or about February 1, 1944 you •will proceed 
from Washington, D.C* to points in Central America in connection 
with a special investigation concerned with experimental work of 
the Office of the Chief, Chemical Warfare Service, U. S. Army* 
The work in question is undertaken at the suggestion of Brigadier 
General E. F. Bullene. 
While we are pleased to cooperate in these in¬ 
vestigations various matters here make it necessary that you not 
lose too much time in travel, so that you are instructed to travel 
by air from the United States to your destination. Your itinerary 
is subject to arrangement with the Office of General Bullene. 
Your expenses will be paid from funds of the 
Smithsonian Institution in accordance with your letters of 
authorization. 
It is contemplated that this work will not re¬ 
quire more than two and one half months when you will return to 
your official station at Y/ashington, D.C. 
You will take with vou as assistant Dr. J. P* E. 
Us 
Morrison of the United States National Museum, whose duties may re¬ 
quire absence from Washington not to exceed four months. 
