Columbia subject headings:
Harvard subject headings:
Automobile industry workers--Labor unions--Michigan--Detroit.
Automobile industry workers--Michigan--Detroit--Labor unions.
Automobile industry workers--Michigan--Detroit.
International Union, United Automobile, Aerospace, and Agricultural Implement Workers of America.
Labor movement--Michigan--Detroit.
Voting--Michigan--Case studies.
Voting--United States--Case studies.
Working class--United States
Princeton subject headings:
International Union, United Automobile, Aircraft, and Agricultural Implement Workers of America.
Labor movement--United States--1914-.
Voting--United States--Case studies.