David Rockefeller his graduate studies, he received a Ph.D. from the University of Chicago in 1940. After completing his studies in Chicago, he became secretary to New York Mayor Fiorello La Guardia for eighteen months in a "dollar a year" public service position. Although the mayor pointed out to the press that Rockefeller was only one of 60 interns in the city government, his working space was, in fact, the vacant office of the deputy mayor. From 1941 to 1942, Rockefeller was assistant regional director of the United States Office of Defense, Health and Welfare Services. Rockefeller enlisted in the U.S. Army
Nelson Rockefeller the CBS radio network Edmund A. Chester. The Roosevelt administration encouraged Hollywood to produce films to encourage positive relations with Latin America. Rockefeller required changes in the movie "Down Argentine Way" (1940) because it was considered offensive to Argentines. It was much more popular in the United States than in Latin America. Charlie Chaplin's satirical "The Great Dictator" (1940) was banned in several countries. In the spring of 1943, Rockefeller supported extensive negotiations and mission of North American members of the Junior Chamber of Commerce to Latin America as Coordinator of Inter-American Affairs of the US' State Department, establishing the