Columbia subject headings:
Harvard subject headings:
Authors, German--20th century--Correspondence
Brahm, Otto, 1856-1912--Correspondence.
Hauptmann, Gerhart, 1862-1946--Correspondence.
Theatrical producers and directors--Germany--Correspondence.
Princeton subject headings:
Brahm, Otto, 1856-1912.
Dramatists, German--20th century--Correspondence.
Hauptmann, Gerhart, 1862-1946--Correspondence.
Theatrical producers and directors--Germany--Correspondence.