Spence Hartzell <br/><br/>
Portrait in oil    How the Ohio Oil Company grew to    
Spence Hartzell 
 -  1962 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum Industry
<br/><br/><label>Dewey Class. No.: </label>X9(F555).73,hM87vN6, K2