Columbia subject headings:
Automobile industry and trade--United States--Management--History--20th century.
Ford Motor Company--Management--History--20th century.
General Motors Corporation--Management--History--20th century.
Harvard subject headings:
Automobile industry and trade--United States--Management--History--20th century.
Ford Motor Company--Management--History--20th century.
General Motors Corporation--Management--History--20th century.
Princeton subject headings:
Automobile industry and trade--United States--Management--History--20th century.
Ford Motor Company--Management--History--20th century.
General Motors Corporation--Management--History--20th century.