Columbia subject headings:
African American automobile industry workers--Biography.
African American communists--Biography.
Denby, Charles.
International Union, United Automobile, Aerospace, and Agricultural Implement Workers of America--History.
United States--Race relations--History.
Harvard subject headings:
African American automobile industry workers--Biography.
African American communists--Biography.
Denby, Charles.
International Union, United Automobile, Aerospace, and Agricultural Implement Workers of America--History.
United States--Race relations--History.
Princeton subject headings: