One of the most effective attacks on Flagler and Rockefeller and their firm was the 1905 publication of "The History of the Standard Oil Company," by Ida Tarbell, a leading muckraker. She documented the company's espionage, price wars, heavy-handed marketing tactics, and courtroom evasions. Although her work prompted a huge backlash against the company, Tarbell claims to have been surprised at its magnitude. "I never had an animus against their size and wealth, never objected to their corporate form. I was willing that they should combine and grow as big and wealthy as they could, but only by legitimate means. But they had never played fair, and that ruined their greatness for me." Tarbell's father had been driven out of the oil business during the South Improvement Company affair.