Columbia subject headings:
Harvard subject headings:
Authors, German--20th century--Correspondence
Hesse, Hermann, 1877-1962.--Correspondence.
Wiegand, Heinrich, 1895---Correspondence.
Wiegand, Heinrich, 1895-1934--Correspondence.
Princeton subject headings:
Authors, German--20th century--Correspondence.
Hesse, Hermann, 1877-1962. Correspondence.
Wiegand, Heinrich, 1895-1934--Correspondence.