10 Richest Americans Of All Time 10 Richest Americans Of All Time May 3, 2018 Collis Cox #7Andrew Carnegie (1835-1919) Estimated Worth in 2018: $101 Billion Wealth Source: Carnegie Steel Company Born In: Dumfermline, Scotland He supplied the steel when America started it’s railroad structure. Pages: 1 2 3 4 5 6 7 8 9 10 11