Mexico D. F. Avenida Insurgentes

April 27, 1930



My Dear Dr. Holland:



As a member of the Fourth International Congress of  Entomology and as representative of Mexico I had the privilege to be your guest during our stay at Pittsburgh, F 28.  Pray accept these few pictures of beautiful Mexico as a slight token of gratitude for your kindness shown to the strangers from every corner of the world and as an expression of my joy to see you after two years as active and full of life and projects as ever.



With best wishes, till we meet again as the Fifth Congress in Paris.



Sincerely yours,

Alfonso Dampf