Columbia subject headings:
Austria--History--1740-1789--Sources.
Empresses--Austria--Correspondence.
Isabella, of Parma, consort of Joseph II, Holy Roman Emperor, 1741-1763--Correspondence.
Maria Christine, consort of Albrecht Kasimir, Duke of Saxe-Teschen, 1742-1798--Correspondence.
Parma and Piacenza (Duchy)--History--18th century--Sources.
Princes--Italy--Parma and Piacenza (Duchy)--Correspondence.
Princesses--Austria--Correspondence.
Harvard subject headings:
Empresses--Austria--Correspondence.
Isabella, of Parma, consort of Joseph II, Holy Roman Emperor, 1741-1763--Correspondence.
Isabella, of Parma, consort of Joseph II, Holy Roman Emperor, 1741-1763--Relations with women.
Maria Christine, consort of Albrecht Kasimir, Duke of Saxe-Teschen, 1742-1798--Relations with women.
Princesses--Austria--Correspondence.
Princeton subject headings:
Empresses--Austria--Correspondence.
Isabella, of Parma, consort of Joseph II, Holy Roman Emperor, 1741-1763--Correspondence.
Isabella, of Parma, consort of Joseph II, Holy Roman Emperor, 1741-1763--Relations with women.
Maria Christine, consort of Albrecht Kasimir, Duke of Saxe-Teschen, 1742-1798--Relations with women.
Princesses--Austria--Correspondence.