Columbia subject headings:
Actors--Austria--Correspondence.
Authors, Austrian--20th century--Correspondence.
Hofmannsthal, Hugo von, 1874-1929--Correspondence.
Schmujlow-Claassen, Ria, 1868-1952--Correspondence.
Harvard subject headings:
Actresses--Austria--Correspondence.
Authors, Austrian--20th century--Correspondence
Hofmannsthal, Hugo von, 1874-1929--Correspondence.
Schmujlow-Claassen, Ria, 1868-1952--Correspondence.
Princeton subject headings:
Authors, Austrian--20th century--Correspondence.
Hofmannsthal, Hugo von, 1874-1929--Correspondence.
Schmujlow-Claassen, Ria, 1868-1952--Correspondence.