Columbia subject headings:
Segregation in transportation--Law and legislation--Southern States--History.
Segregation in transportation--Southern States--History.
Harvard subject headings:
Segregation in transportation--Law and legislation--Southern States--History.
Segregation in transportation--Southern States--History.
Princeton subject headings:
Segregation in transportation--Law and legislation--Southern States--History.
Segregation in transportation--Southern States--History.