Columbia subject headings:
Harvard subject headings:
Lippe (Germany)
Lippe (Germany)--History--20th century--Exhibitions.
Westphalia (Germany)
Westphalia (Germany)--History--20th century--Exhibitions.
World War, 1914-1918--Exhibitions--Germany.
World War, 1914-1918--Germany--Lippe--Exhibitions.
World War, 1914-1918--Germany--Westphalia--Exhibitions.
Princeton subject headings:
World War, 1914-1918--Germany--Lippe--Exhibitions.
World War, 1914-1918--Germany--Westphalia--Exhibitions.