Columbia subject headings:
Harvard subject headings:
China--Foreign relations--1644-1912
China--Foreign relations--United States.
China. Treaties, etc. 1845 December 30.
United States--Foreign relations--China.
United States--Foreign relations--To 1865.
Princeton subject headings:
China--Foreign relations--1644-1912.
China--Foreign relations--United States.
China. Treaties, etc. 1845 December 30
United States--Foreign relations--China.
United States--Foreign relations--To 1865.