Columbia subject headings:
Harvard subject headings:
Authors, German--Correspondence
Economics and literature.
Economists--Correspondence.
Kapp, K. William (Karl William), 1910-1976--Correspondence.
Kapp, K. William (Karl William), 1910-1976--Friends and associates.
Wiechert, Ernst, 1887-1950--Correspondence.
Wiechert, Ernst, 1887-1950--Friends and associates.
Princeton subject headings:
Authors, German--Correspondence.
Economics and literature.
Economists--Correspondence.
Kapp, K. William (Karl William), 1910-1976--Correspondence.
Kapp, K. William (Karl William), 1910-1976--Friends and associates.
Wiechert, Ernst, 1887-1950--Correspondence.
Wiechert, Ernst, 1887-1950--Friends and associates.