The company Rockefeller started at age 23, Standard Oil, came to hold a virtual monopoly on the American oil industry. He maintained control of Standard Oil until its eventual break-up by the U.S.

The family’s fortune, established by America’s first billionaire John D. Rockefeller Sr., the founder of the Standard Oil ...

When Ida Tarbell traveled to Cleveland to observe John D. Rockefeller, Sr., the man she had been writing about for two years, she chose not to confront him face to face. For two hours ...

John D. Rockefeller, Sr. Rockefeller Archive Center. Until the 1970s, when they became the focus of a controversial book, the family dynamics of the Rockefeller dynasty were one of America's best ...

Anna Moneymaker / Getty Images In 1913, John D. Rockefeller’s fortune peaked at an estimated $900 million (about $29.3 billion in today's dollars). In 2024, the Rockefeller family's estimated ...

Tracing our roots back to John D. Rockefeller, Sr., who in 1891 set out to manage his philanthropy with the same professionalism as his business ventures, we maintain our founding belief that ...

Nicholas, Tom, and Vasiliki Fouka. "John D. Rockefeller: The Richest Man in the World." Harvard Business School Case 815-088, December 2014. (Revised March 2018.) ...