Columbia subject headings:
Funeral rites and ceremonies--Congresses.
Military symbols--Congresses.
Soldiers' bodies, Disposition of--Congresses.
Soldiers' monuments--Congresses.
World War, 1914-1918--Casualties--Congresses.
World War, 1914-1918--Unknown military personnel--Congresses.
Harvard subject headings:
Military symbols--Congresses.
World War, 1914-1918--Casualties--Congresses.
World War, 1914-1918--Unknown military personnel--Congresses.
Princeton subject headings:
Military symbols.
World War, 1914-1918--Casualties.
World War, 1914-1918--Unknown military personnel.