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
Percy Avery Rockefeller 25, 1934. Percy Avery Rockefeller Percy Avery Rockefeller (February 27, 1878 — September 25, 1934) was a board director who founded and was vice president of Owenoke Corporation. Percy was the youngest son of William Avery Rockefeller Jr. and Almira Geraldine Goodsell. He attended Yale University from 1897 to 1900, where he was a member of Skull and Bones. Rockefeller was manager of the 1899 Yale Bulldogs football team and earned a varsity letter for his efforts. He was a board director of Air Reduction Company, American International Corporation, Atlantic Fruit Company, Anaconda Copper Mining Company, Bethlehem Steel Corporation, Bowman