経済協力局
In 1944, he became advisor on German Economic Affairs at the U.S. Department of State. In 1945, he became a member of the American delegation to the Potsdam Conference. In the summer of 1948, he worked on the Economic Cooperation Administration in Paris. In the summer of 1951, he served in the U.S. Embassy in Belgrade in economic aid to Yugoslavia. From 1955 to 1956, he served as a fiscal and monetary advisor to the Pakistan Planning Board.