According to his New York Times obituary, "it was estimated after Mr. Rockefeller retired from business that he had accumulated close to $1,500,000,000 out of the earnings of the Standard Oil trust and out of his other investments.
Prema osmrtnici iz New York Timesa, "procijenjeno je nakon što se gospodin Rockefeller povukao iz poslovanja da je skupio blizu 1,5 milijarde dolara zarade trusta Standard Oila i iz svojih drugih investicija.