Naomi Lamoreaux, "Entrepreneurship, Organization, Economic Concentration", The Long Nineteenth Century, 427.
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Naomi Lamoreaux, "Entrepreneurship in the United States, 1865–1920", The Invention of Enterprise, ed. David S. Landes, Joel Mokyr, and William J. Baumol (Princeton, NJ: Princeton University Press, 2010), 386.
