Ida Tarbell was a journalist who published many works, but arguably her most famous was an expose chronicling the corrupt practices of John D. Rockefeller and Standard Oil, the largest company of the time. The series was published in full over two years starting in 1905 and helped garner support for passing anti-trust legislation, which was used to break up the company. Sources: Ida M. Tarbell, ca. 1905-1945 - Library of Congress, Prints and Photographs Division, Harris & Ewing Collection, https