April 18, 1950. 
Colonel Frank A. Pettit, 
Director, Inter American Geodetic Survey, 
United States Army Caribbean, 
Box 2031, 
Balboa Heights, Canal Done. 
Dear Colonel Pettit: 
You may remember that I called at your office 
in the early part of February relative to the trip that I was 
to make into the SerranCa de Maje, I am pleased to write 
that my work in that region was completely successful, and 
that I came out with an excellent collection of birds, the 
first to be made, so far as I am aware, in that region.^ The 
mountain work was especially interesting since I found that 
the western end of the range on the Pacific side was de¬ 
finitely wetter than X had anticipated. I feel quite sure that 
this condition will be reflected in the scientific specimens 
concerned, and that some of these will prove to be new to 
science. The information that your office gave me relative 
to the region proved to be invaluable. 
I returned to Balboa the evening of April 3 to find 
in my mail certain matters that required my return to 
Washington as promptly as possible. Due to the coming Holy 
Week, and the accompanying holidays, I was unable to call on 
you prior to my departure much to my disappointment, I wish 
to thank you sincerely for the help that you gave me. 
ta brief report, I made contact in Chiman with 
Eustacio Villareal, recommended by your office, and had definite 
help from him. Eust&cio was^fll himself but brought me men 
who served me weUj, price#; how. are a little higher than 
formerly since wages now are $3.00 without food, $2.00 with food 
