August 9, 1949 
Mr. Ratibor Hartmann, 
General Delivery, 
Panama City, R. de P. 
Dear Ratibor: 
Back in June, following my return to Washington, 
I wrote you at Avenida Norte No. 16-A, sending you a few 
pictures. I have had no reply from you and wonder if the 
letter has reached your hards. Since my return, I have 
learned of another collection of birds made on the Bayano 
River at San Antonio, about twenty years ago by a professional 
collector, Austin Paul Smith. I am going to try to locate t&ese 
specimens but X do not believe that he got much that we did 
not obtain. 
Dr. Herbert C. Clark, Gorgas Memorial Laboratory, 
wrote me recently that he was g>ing to Canitas on the Bayano 
in connection with his yellow fever survey among jungle monkeys. 
I think that he wanted to get in touch with you to see if you 
would go along. I gave him your address as I had it horn and 
also that of your father. 
About the time I wrote you, I sent a set of 
pictures to Laurentino Castro at the Quebrada Carriaso and 
also some to Sgt. Juan Rai^hona in Chepo, I have a few 
duplicates, small size, that may interest you that I enclose 
herewith. 
I have done quite a lot of work with the Panamanian 
collections since I returned and also have been looking ahead 
to my next trip which will have to be in February or March 
in the dry season. I want very much to get into the Bayano 
country. Recently I have received some additionalinformation 
supplementing that which I obtained on the airplane trip 
concerning which I wrote you in my earlier letter. I now have 
two plans for getting into the country and will use whichever 
