Columbia subject headings:
China--Foreign relations--1644-1912.
China--History--19th century.
Diplomats--China--History--19th century.
Harvard subject headings:
China--Foreign relations--1644-1912
China--History--Qing dynasty, 1644-1912.
Diplomats--China--History--19th century.
Princeton subject headings:
China--Foreign relations--1644-1912.
China--History--Qing dynasty, 1644-1912.
Diplomats--China--History--19th century.