Columbia subject headings:
Artists--Germany--Correspondence.
Authors, German--20th century--Correspondence.
Hesse, Hermann, 1877-1962--Correspondence.
Purrmann, Hans, 1880-1966--Correspondence.
Harvard subject headings:
Artists--Germany--Correspondence.
Authors, German--20th century--Correspondence
Hesse, Hermann, 1877-1962. Correspondence.
Purrmann, Hans, 1880-1966--Correspondence.
Princeton subject headings:
Artists--Germany--Correspondence.
Authors, German--Correspondence.
Exiles--Switzerland--Correspondence.
Fiction.
Hesse, Hermann, 1877-1962. Correspondence.
Purrmann, Hans, 1880-1966--Correspondence.