Titan: The Life of John D. Rockefeller, Sr. by Ron Chernow

Ron Chernow won the National Book Award in 1990 for his first book, The  House of Morgan, and his second book, The Warburgs, won the Eccles Prize  as the Best Business Book of 1993. His biography of John D.  Rockefeller, Sr., Titan, was a national bestseller and a National Book  Critics Circle Award finalist.