Columbia subject headings:
Historiography--History--19th century--Congresses.
Historiography--History--20th century--Congresses.
History--Philosophy--History--19th century--Congresses.
History--Philosophy--History--20th century--Congresses.
Harvard subject headings:
Historiography--History--19th century--Congresses.
Historiography--History--20th century--Congresses.
History--Philosophy--History--19th century--Congresses.
History--Philosophy--History--20th century--Congresses.
Princeton subject headings: