January 10, 1950. 
Dr. Herbert C. Clark, 
Gorgas Memorial Laboratory, 
Apartado 125 2, 
Panama, R. de P. 
Dear Dr. Clark: 
I appreciate your letter of 4 January 1950 and 
thank you and Col. Hertig for your friendly offer of 
assistance relative tot he release of Ratibor Hartmann 
to me for the period of the coming expedition. I will 
arrange to pay his salary at the rate of $125.00 per month 
as you indicate. 
From my present schedule I wish to take him on 
about Monday, February 13, and would wish to retain his 
services until about April 5. It is possible that there 
might be a shift of two or three days in these dates, but 
the period indicated is to be covered. 
I have our Regents meeting this week and the 
Appropriation Hearings a week from today. In the mean - 
while Perrygo and I are busy packing a field kit to ship to 
Panama! 
Sincerely yours. 
A. Wetmore, 
Secretary. 
