Columbia subject headings:
Composers--Austria--Correspondence.
Mozart, Maria Anna Thekla, 1758-1841.
Mozart, Wolfgang Amadeus, 1756-1791--Correspondence.
Harvard subject headings:
Princeton subject headings:
Composers--Austria--Correspondence.
Mozart, Leopold, 1719-1787--Correspondence.
Mozart, Maria Anna Thekla, 1758-1841--Correspondence.
Mozart, Wolfgang Amadeus, 1756-1791. Correspondence.