Columbia subject headings:
Friedrich, Caspar David, 1774-1840.
Harvard subject headings:
Biedermeier (Art)--Germany--Catalogs.
Drawing, German--19th century--Catalogs.
Drawing, German--Catalogs
Drawing--19th century--Germany--Catalogs.
Drawing--Germany--Mannheim--Catalogs.
Friedrich, Caspar David, 1774-1840--Catalogs.
Romanticism in art--Germany--Catalogs.
Städtische Kunsthalle Mannheim--Catalogs.
Princeton subject headings:
Friedrich, Caspar David, 1774-1840.