Could be. I do know the Rockefellers stopped allowing their wealth to be reported publicly back in 1908 when John D., Sr., was acknoweldegd THEN as the richest man in the world with $3 Billion--BEFORE the advent of the internal combustion engine, lubricants, heating oil, plastics, oil-based paints and pharmaceuticals, etc. i.e. RICHEST just from the sale of kerosene for lamp oil.