John D. Rockefeller III, Oil Tycoon, Businessman, Financier

John D. Rockefeller III, American philanthropist, a member of the famed Rockefeller family. He was the eldest of the five sons of John D. Rockefeller, Jr. After graduating from Princeton University (1929), he joined the family’s enterprises, becoming, by 1931, trustee of the Rockefeller Foundation

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Here's How John D Rockefeller Became the First Billionaire