Columbia subject headings:
Harvard subject headings:
Art patrons--Germany--Wuppertal--Biography.
Bankers--Germany--Wuppertal--Biography.
Heydt family--Art patronage.
Von der Heydt-Museum.
Princeton subject headings:
Art patronage--Germany--Wuppertal.
Heydt, Eduard von der, 1882-1964--Art patronage.
Heydt, Eduard von der, 1882-1964--Family.