Columbia subject headings:
Art--Private collections--Switzerland--Catalogs.
Gottfried-Keller-Stiftung--Art collections--Catalogs.
Gottfried-Keller-Stiftung--History.
Harvard subject headings:
Art--Private collections--Switzerland--Catalogs.
Gottfried-Keller-Stifting--Art collections--Catalogs.
Gottfried-Keller-Stiftung--Art collections--Catalogs.
Gottfried-Keller-Stiftung--History.
Princeton subject headings:
Art museums--Switzerland.
Art--Collectors and collecting--Switzerland.
Art--Switzerland--Catalogs.
Gottfried-Keller-Stiftung--History.