John D. Rockefeller: A Portrait In Oils is a biography of the famous American industrialist, philanthropist, and founder of Standard Oil, John D. Rockefeller. Written by John K. Winkler, the book provides a comprehensive look at Rockefeller's life, from his humble beginnings as a poor boy in upstate New York to his rise as one of the wealthiest men in the world.The book explores Rockefeller's early years, his family background, and his education,...