Columbia subject headings:
Great Britain--Foreign relations--United States.
Slavery--United States--Controversial literature.
Trent Affair, 1861.
United States--Foreign relations--Great Britain.
Harvard subject headings:
Great Britain--Foreign relations--United States.
Slavery--United States--Controversial literature.
Trent Affair, 1861.
United States--Foreign relations--Great Britain.
Princeton subject headings:
Great Britain--Foreign relations--United States.
Slavery--United States--Controversial literature.
Trent Affair, 1861.
United States--Foreign relations--Great Britain.