Columbia subject headings:
Authors, German--20th century--Correspondence.
Hacks, Peter, 1928-2003--Correspondence.
Müller, André, 1925 March 8---Correspondence.
Harvard subject headings:
Authors, German--20th century--Correspondence
Hacks, Peter, 1928-2003--Correspondence.
Müller, André, 1925 March 8---Correspondence.
Müller, André, 1925 March 8---Correspondence.
Princeton subject headings:
Authors, German--20th century--Correspondence.
Hacks, Peter, 1928-2003--Correspondence.
Müller, André, 1925 March 8---Correspondence.
Personal correspondence.