What was the article that Ida Tarbell wrote about John Rockefeller?

Ida Tarbell wrote "The History of the Standard Oil Company," a groundbreaking series of articles published in McClure's Magazine between 1902 and 1904. The work exposed the monopolistic practices and unethical business tactics employed by John D. Rockefeller and his company, Standard Oil. Tarbell's investigative journalism played a significant role in the progressive movement and contributed to the eventual breakup of Standard Oil in 1911. Her writings are considered a pivotal moment in American journalism and the fight against corporate monopolies.