Columbia subject headings:
Business enterprises--United States--History.
Capitalism--United States--History.
Industrial concentration--United States--History.
Industrial policy--United States--History.
Harvard subject headings:
Business enterprises--United States--History
Capitalism--United States--History
Industrial concentration--United States--History.
Industrial policy--United States--History
Princeton subject headings:
Business enterprises--United States--History.
Capitalism--United States--History.
Industrial concentration--United States--History.
Industrial policy--United States--History.