June 18, 1947 
Lt* General W* D* Crittenberger, 
Commanding Gene ral, 
Caribbean Defense Command, 
Quarry Height, Canal Zone. 
My dear General Crittenberger* 
On March 22 last it was my honor to call on you in 
your office at Quarry Heights to acquaint you briefly with 
my plans for a scientific expedition into eastern Darien. 
1 am writing to report that my mission was entirely 
successful, and that I was able to get back up the Jaque Elver 
for two days travel to the last of the Indian settlements on 
the river. We went in in dugout canoes, this being the only 
feasible means of travel. I remained here for approximately 
a month, living among the Indians and making biological collections 
for the Smithsonian Institution. 
While living conditions were not easy we carae out in 
good health without malaria. The region, however, is not one that 
I recommend for ordinary travel. 
I regret very much that on my return to the Canal Zone 
it was imperative for me to come at once to Washington due to a 
call to appear before a House Committee on Appropriations. I did 
not, therefore, have opportunity to call on you in person. 
I am deeply indebted to the services for assistance 
and facilities, and wish to express to you personally my appreciation 
of your interest in my work. 
Sincerely yourj 
A. Wetmore, 
Secretary. 
