Columbia subject headings:
Authors, German--20th century--Correspondence.
Hesse, Hermann, 1877-1962--Correspondence.
Lang, Josef Bernhard, 1881-1945--Correspondence.
Harvard subject headings:
Authors, German--20th century--Correspondence
Hesse, Hermann, 1877-1962. Correspondence
Lang, Josef Bernhard, 1881-1945--Corresponcence.
Lang, Josef Bernhard, 1881-1945--Correspondence.
Princeton subject headings:
Hesse, Hermann, 1877-1962. Correspondence.
Lang, Josef Bernhard, 1881-1945--Correspondence.
Personal correspondence.