UNITED STATES NATIONAL MUSEUM 
BUREAU OF AMERICAN ETHNOLOGY 
ASTROPHYSICAL OBSERVATORY 
NATIONAL AIR MUSEUM 
NATIONAL ZOOLOGICAL PARK 
SMITHSONIAN INSTITUTION 
mf.shinr/lon 23, D. O. 
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NATIONAL GALLERY OF ART 
NATIOKiAL COLLECTION OF FINE ARTS 
FREER GALLERY OF ART 
INTERNATIONAL EXCHANGE SERVICE 
CANAL ZONE BIOLOGICAL AREA 
January 25, 1952 
Dr. Alexander Wetmore, 
Secretary, Smithsonian Institution, 
Washington 25, D. C. 
Dear Dr. Wetmore: 
On or about January 31, 1952, you will proceed 
from Washington, D. C. to Miami, Florida and to the 
Canal Zone and points in Panama. 
You will be accompanied by W. M. Perrygo, 
U. S. National Museum, as assistant, and will include 
his expenses under the present letter of authorization. 
You will be occupied in administrative work 
concerned with the Canal Zone Biological Area in the 
Canal Zone, and with biological studies in the Republic 
of Panama. 
You will be allowed necessary travel expenses, 
including travel by air, hire of cars, boats and other 
special conveyances, actual expenditures for subsistence, 
hire of assistants and their subsistence if required, hire 
of pack animals, necessary expenses for the operation of 
motor vehicles, purchase of supplies, specimens and 
materials, and such other miscellaneous expenditures as 
may be required, not to exceed $1, 500, payable by the 
Smithsonian Institution. 
It is contemplated that this work will require about 
two months when you will return to your official station 
at Washington, D. C. 
Very truly yours. 
hs 
