Columbia subject headings:
Art--Collectors and collecting--Spain--History--Congresses.
Cultural property--Protection--Spain--History--Congresses.
Museums--Spain--History--Congresses.
Harvard subject headings:
Art patronage--Spain--History--18th century.
Art patronage--Spain--History--19th century.
Art--Collectors and collecting--Spain--History--18th century.
Art--Collectors and collecting--Spain--History--19th century.
Cultural property--Spain--History--18th century.
Cultural property--Spain--History--19th century.
Museums--Spain--History--18th century.
Museums--Spain--History--19th century.
Princeton subject headings:
Art patronage--Spain--History--18th century.
Art patronage--Spain--History--19th century.
Art--Collectors and collecting--Spain--History--18th century.
Art--Collectors and collecting--Spain--History--19th century.
Cultural property--Spain--History--18th century.
Cultural property--Spain--History--19th century.
Museums--Spain--History--18th century.
Museums--Spain--History--19th century.