Columbia subject headings:
Harvard subject headings:
Authors, German--18th century--Biography
Authors, German--18th century--Biography--Sources.
Authors, German--18th century--Correspondence
Schiller, Friedrich, 1759-1805
Schiller, Friedrich, 1759-1805--Friends and associates.
Schiller, Friedrich, 1759-1805. Correspondence
Princeton subject headings:
Schiller, Friedrich, 1759-1805.