The term CO. FOUNDED BY ROCKEFELLER is referring to the Standard Oil Company of Ohio (SOHIO), which was founded by John D. Rockefeller in 1870. It was one of the largest oil refiners in the United States and was a major part of the Standard Oil Trust. The company was eventually broken up in 1911 due to antitrust laws, but its legacy lives on in the form of several large companies, including BP, Chevron, and ExxonMobil.