Columbia subject headings:
Friedrich, Caspar David, 1774-1840--Criticism and interpretation--Congresses.
Romanticism--Germany--Congresses.
Harvard subject headings:
Princeton subject headings:
Art, German--19th century--History and criticism.
Friedrich, Caspar David, 1774-1840--Criticism and interpretation.
Romanticism in art.
Romanticism--Germany--History.