Henry Ford (1863–1947) was an American industrialist and engineer best known for being the founder of the Ford Motor Company. His corporation developed and manufactured the Model T to be mass-produced on the assembly line, transforming the automobile from a high-end luxury to a working-class necessity.

Andrew Carnegie (1835–1919) was a Scottish-American industrialist, railroad man, and steel magnate whose charitable giving and life philosophies (“The man who dies thus rich dies disgraced”) made him one of the most captivating figures in American history. After selling his Pittsburgh-based steel company to J. P. Morgan, Carnegie spent the remaining years of his life giving away roughly $350 million (the equivalent of almost $5 trillion today) to universities and charities around the world. A self-proclaimed positivist, his influence and beneficence are reflected in the names of institutions such as Carnegie Hall, Carnegie Mellon University, and the Carnegie Endowment for International Peace.

Walter Bagehot (1826–1877) was an English businessman and journalist. He founded the National Review in 1855 with Richard Holt Hutton before becoming editor in chief of the Economist, a post he held for seventeen years.
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