Columbia subject headings:
Business enterprises--United States--History.
Businessmen--United States--History.
United States--Commerce--Historiography.
United States--Commerce--History.
Harvard subject headings:
Business enterprises--United States--History
Businessmen--United States--History.
Businesspeople--United States--History.
Capitalism--United States--History
United States--Commerce--Historiography.
United States--Commerce--History.
Princeton subject headings:
Business enterprises--United States--History.
Businessmen--United States--History.
United States--Commerce--Historiography.
United States--Commerce--History.