Garfinckel's was a prominent department store chain that catered to elite consumers, including government leaders and their wives, and carved out a high-end retail niche in Washington, DC for 85 years.
Held to celebrate the centennial of Thomas Jefferson's 1804 Louisiana Purchase, the 1904 St. Louis World's Fair was the perfect place for George Westinghouse to demonstrate his companies' dominance and specifically, the skills of the 9,000 Pittsburghers who worked in his factories.
But a century before these tech and financial giants, there was John D. Rockefeller. He accumulated so much wealth that he could still make the list if he were alive today.