経済協力局
In 1950 Dean worked in government service as an economic analyst with the European Headquarters of the Economic Cooperation Administration in Paris, France. From 1951–1953 he was an industrial analyst with ECA in Brussels, Belgium. From 1953–1956 he was assistant economic commissioner with the International Cooperation Administration in French Indo-China with accreditation in Saigon, Phnom Penh, and Vientiane.