Columbia subject headings:
Automobile industry and trade--United States--History.
Automobile industry and trade--United States--Management--History.
Automobile industry workers--Labor unions--United States--History.
Industrial relations--United States--History.
Harvard subject headings:
Automobile industry and trade--United States--History
Automobile industry and trade--United States--Management--History.
Automobile industry workers--Labor unions--United States--History.
Industrial relations--United States--History
Working class--United States--History
Princeton subject headings:
Automobile industry and trade--United States--History.
Automobile industry and trade--United States--Management--History.
Automobile industry workers--Labor unions--United States--History.
Industrial relations--United States--History.