The History of the Standard Oil Company for Standard Oil and lived through what Ida called "hate, suspicion, and fear that engulfed the community." As a direct witness to the schemes and horizontal integration of John D. Rockefeller and his associates, Tarbell began building the foundations of "The History of the Standard Oil Company" early with growing senses of interest and discontent. After her education and accumulate writing experience, Tarbell began working at "McClure's" Magazine, where she wrote several successful series on historical figures. After this initial success, her shift turned to John D. Rockefeller. She began by interviewing Henry H. Rogers, one of her father's fellow
Standard Oil had gradually eroded to 70 percent by 1906 which was the year when the antitrust case was filed against Standard, and down to 64 percent by 1911 when Standard was ordered broken up and at least 147 refining companies were competing with Standard including Gulf, Texaco, and Shell. It did not try to monopolize the exploration and pumping of oil (its share in 1911 was 11 percent). In 1909, the US Department of Justice sued Standard under federal anti-trust law, the Sherman Antitrust Act of 1890, for sustaining a monopoly and restraining interstate commerce by: Rebates, preferences, and other discriminatory