Columbia subject headings:
Authors, German--20th century--Correspondence.
Brecht, Bertolt, 1898-1956--Correspondence.
Weigel, Helene, 1900-1971--Correspondence.
Harvard subject headings:
Authors, German--20th century--Correspondence
Brecht, Bertolt, 1898-1956--Correspondence.
Weigel, Helene, 1900-1971--Correspondence.
Princeton subject headings:
Authors, German--20th century--Correspondence.
Brecht, Bertolt, 1898-1956--Correspondence.
Weigel, Helene, 1900-1971--Correspondence.