ushistory.org same strategy US History: The New Tycoons: John D. Rockefeller John D. Rockefeller, Sr., John D. Rockefeller http://www.ushistory.org/us/36b.asp http://www.ushistory.org/us/36b.asp John D. Rockefeller same strategy http://www.ushistory.org/us/36b.asp Rockerfeller