Columbia subject headings:
Harvard subject headings:
Authors, German--20th century--Correspondence
Hauptmann, Gerhart, 1862-1946--Correspondence.
Kästner, Erhart, 1904-1974. Correspondence.
Princeton subject headings:
Authors, German--20th cenutry--Correspondence.
Hauptmann, Gerhart, 1862-1946--Correspondence.
Kästner, Erhart, 1904-1974. Correspondence.