Columbia subject headings:
African American labor union members--History.
Brotherhood of Sleeping Car Porters--History.
Discrimination in employment--United States--History.
Race discrimination--United States--History.
Harvard subject headings:
African American labor union members--History.
Brotherhood of Sleeping Car Porters--History.
Discrimination in employment--United States--History.
Pullman porters--History.
Race discrimination--United States--History
Princeton subject headings:
African American labor union members--History.
Brotherhood of Sleeping Car Porters--History.
Discrimination in employment--United States--History.
Race discrimination--United States--History.