Columbia subject headings:
Composers--Austria--Correspondence.
Mozart family--Correspondence.
Mozart, Wolfgang Amadeus, 1756-1791--Correspondence.
Harvard subject headings:
Composers--Austria--Correspondence
Mozart family--Correspondence.
Mozart, Wolfgang Amadeus, 1756-1791. Correspondence.
Princeton subject headings:
Composers--Austria--Correspondence.
Mozart family--Correspondence.
Mozart, Wolfgang Amadeus, 1756-1791. Correspondence.