Columbia subject headings:
Dramatists, German--19th century--Correspondence.
Hebbel, Friedrich, 1813-1863--Correspondence.
Harvard subject headings:
Dramatists, German--19th century--Correspondence.
Hebbel, Friedrich, 1813-1863--Correspondence.
Princeton subject headings:
Dramatists, German--19th century--Correspondence.
Hebbel, Friedrich, 1813-1863.