Ida Tarbell's investigations into Standard Oil were partly responsible for later legal action by the federal government against the company.

VOA: special.2010.04.25

She soon found evidence that Standard Oil had been using unfair and illegal methods to destroy other oil companies.

VOA: special.2010.04.25

In nineteen eleven, the Supreme Court of the United States ruled against Standard Oil because of its illegal dealings.

VOA: special.2010.04.25

Ida Tarbell charged that Standard Oil was using illegal methods to hurt or destroy smaller oil companies.

VOA: special.2010.04.25

The success of the Standard Oil Company led to the creation of trusts in other industries.

VOA: special.2010.06.03

Her reports showed that Standard Oil used illegal methods to make other companies lose business.

VOA: special.2010.04.25

After a company failed, Standard Oil would then increase the price of its oil.

VOA: special.2010.04.25

They were afraid of the Standard Oil Company and its owner,John D.Rockefeller.

VOA: special.2010.04.25

Her nineteen-part series was called The History of the Standard Oil Company.

VOA: special.2010.04.25

Miss Tarbell had trouble discovering information about the Standard Oil Company.

VOA: special.2010.04.25

He formed the Standard Oil Company of Ohio.

VOA: special.2010.02.25

That company was Standard Oil.

VOA: special.2010.04.25