Columbia subject headings:
Harvard subject headings:
Collective memory--Congresses.
Historiography--Congresses
War--Congresses
World War, 1914-1918--Congresses
World War, 1939-1945--Congresses.
Princeton subject headings:
Atrocities--History--20th century--Congresses.
Collective memory--Congresses.
Historiography--20th century--Congresses.
History, Modern--20th century--Historiography--Congresses.
Memorialization--Congresses.
War--History--20th century--Historiography--Congresses.