Columbia subject headings:
Harvard subject headings:
Historians--Switzerland--Correspondence.
Müller, Johann Georg, 1759-1819--Correspondence.
Müller, Johannes von, 1752-1809--Correspondence.
Princeton subject headings:
Historians--Switzerland--Correspondence.
Müller, Johann Georg, 1759-1819--Correspondence.
Müller, Johannes von, 1752-1809--Correspondence.