Columbia subject headings:
Art--Collectors and collecting--Switzerland--History.
Schweizerische Nationalbibliothek--History.
Harvard subject headings:
Art--Collectors and collecting--Switzerland--History.
Schweizerische Nationalbibliothek--History.
Princeton subject headings:
Art--Collectors and collecting--Switzerland--History.
Schweizerische Nationalbibliothek--History.