“They had never played fair,” Tarbell wrote of Standard Oil, “and that ruined their greatness for me.” She became one of the most influential muckrakers of the Gilded Age, helping to usher in that age of political, economic and industrial reform known as the Progressive Era. By dint of what she termed “steady, painstaking work,” Tarbell unearthed damaging internal documents, supported by interviews with employees, lawyers and-with the help of Mark Twain-candid conversations with Standard Oil’s most powerful senior executive at the time, Henry H. Almost 30 years later, Tarbell would redefine investigative journalism with a 19-part series in McClure’s magazine, a masterpiece of journalism and an unrelenting indictment that brought down one of history’s greatest tycoons and effectively broke up Standard Oil’s monopoly.

Tarbell was, in effect, a young woman betrayed, not by a straying lover but by Standard Oil’s secret deals with the major railroads-a collusive scheme that allowed the company to crush not only her father’s business, but all of its competitors. She didn’t understand it at the time, not all of it, anyway, but she would never forget the wretched effects of “the oil war” of 1872, which enabled Rockefeller to leave Cleveland owning 85 percent of the city’s oil refineries. and his newly incorporated Standard Oil Company, or attempt to compete and face ruin. Photo: WikipediaĪt the age of 14, Ida Tarbell witnessed the Cleveland Massacre, in which dozens of small oil producers in Ohio and Western Pennsylvania, including her father, were faced with a daunting choice that seemed to come out of nowhere: sell their businesses to the shrewd, confident 32 year-old John D.

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