Columbia subject headings:
Corporations--United States--History--20th century.
Industrial policy--United States--History--20th century.
Industries--United States--History--20th century.
Harvard subject headings:
Corporations--United States--History--20th century.
Industrial policy--United States--History--20th century
Industries--United States--History--20th century.
Princeton subject headings:
Corporations--United States--History--20th century.
Industrial policy--United States--History--20th century.
Industries--United States--History--20th century.