![DAVID K. WATSON](http://upload.wikimedia.org/wikipedia/commons/thumb/9/9f/The_History_of_the_Standard_Oil_Company_Vol_2_-_David_K._Watson.jpg/250px-The_History_of_the_Standard_Oil_Company_Vol_2_-_David_K._Watson.jpg)
DAVID K. WATSON
Attorney-General of Ohio from 1887 to 1891. Mr. Watson brought suit against the Standard Oil Company in May, 1890, in the Supreme Court of Ohio.
![FRANK S. MONNETT](http://upload.wikimedia.org/wikipedia/commons/thumb/7/7a/The_History_of_the_Standard_Oil_Company_Vol_2_-_Frank_S._Monnett.png/250px-The_History_of_the_Standard_Oil_Company_Vol_2_-_Frank_S._Monnett.png)
FRANK S. MONNETT
Attorney-General of Ohio from 1895 to 1899. Mr. Monnett brought suit against the Standard Oil Company in 1897 in the Supreme Court of Ohio.
![LEWIS EMERY, JR.](http://upload.wikimedia.org/wikipedia/commons/thumb/4/4e/The_History_of_the_Standard_Oil_Company_Vol_2_-_Lewis_Emery%2C_Jr.jpg/250px-The_History_of_the_Standard_Oil_Company_Vol_2_-_Lewis_Emery%2C_Jr.jpg)
LEWIS EMERY, JR.
Independent oil operator and refiner. Leader in movement for free pipe-line bill and anti-discrimination laws. Founder of the United States Pipe Line.
![GEORGE RICE](http://upload.wikimedia.org/wikipedia/commons/thumb/0/05/The_History_of_the_Standard_Oil_Company_Vol_2_-_George_Rice.jpg/250px-The_History_of_the_Standard_Oil_Company_Vol_2_-_George_Rice.jpg)
GEORGE RICE
Plaintiff in numerous cases brought against the Standard Oil Company. Prominent independent witness in various State and congressional investigations.