Columbia subject headings:
Art patrons--Germany--Congresses.
Art--Collectors and collecting--Germany--Congresses.
Art--Private collections--Germany--Congresses.
Book collectors--Germany--Congresses.
Jews--Germany--History--1800-1933--Congresses.
Harvard subject headings:
Art patronage--Germany--History--20th century--Congresses.
Jewish art--Germany--History--20th century--Congresses.
Jews--Germany--History--1933-1945--Congresses.
Jews--Germany--Social life and customs--20th century--Congresses.
Princeton subject headings:
Art patrons--Germany--Congresses.
Art--Collectors and collecting--Germany--Congresses.
Art--Private collections--Germany--Congresses.
Book collectors--Germany--Congresses.
Jews--Germany--History--1800-1933--Congresses.