Columbia subject headings:
Frederick William IV, King of Prussia, 1795-1861--Criticism and interpretation.
Frederick William IV, King of Prussia, 1795-1861--Exhibitions.
Harvard subject headings:
Drawing--Germany--Potsdam--Exhibitions.
Frederick William IV, King of Prussia, 1795-1861--Exhibitions.
Stiftung Preussische Schlösser und Gärten Berlin-Brandenburg--Exhibitions.
Princeton subject headings:
Frederick William IV, King of Prussia, 1795-1861--Exhibitions.