Columbia subject headings:
Hauptmann, Gerhart, 1862-1946--Correspondence.
Hauptmann, Margarete--Correspondence.
Stehr, Hedwig, -1939--Correspondence.
Stehr, Hermann, 1864-1940--Correspondence.
Harvard subject headings:
Hauptmann, Gerhart, 1862-1946--Correspondence.
Hauptmann, Margarete--Correspondence.
Stehr, Hedwig, -1939--Correspondence.
Stehr, Hermann, 1864-1940--Correspondence.
Princeton subject headings:
Hauptmann, Gerhart, 1862-1946--Correspondence.
Hauptmann, Margarete--Correspondence.
Stehr, Hedwig--Correspondence.
Stehr, Hermann, 1864-1940--Correspondence.