Columbia subject headings:
Capitalism--Congresses.
Economic history--Congresses.
History, Modern--Congresses.
Military history, Modern--Congresses.
War--Congresses.
Harvard subject headings:
History, Modern--Congresses.
Military history, Modern--Congresses.
War--Congresses
Princeton subject headings:
Capitalism--Congresses.
Economic history--Congresses.
History, Modern--Congresses.
Military history, Modern--Congresses.
War--Congresses.