Columbia subject headings:
Coaching (Transportation)--China--History.
Postal service--China--History.
Sichuan Sheng (China)--History.
Stagecoach lines--China--History.
Harvard subject headings:
Coaching (Transportation)--China--History.
Postal service--China--History
Sichuan Sheng (China)--History.
Stagecoach lines--China--History.
Princeton subject headings: