Columbia subject headings:
Authors, French--18th century--Correspondence.
Philosophers--France--Correspondence.
Voltaire, 1694-1778--Correspondence.
Harvard subject headings:
Authors, French--18th century--Correspondence
Philosophers--France--Correspondence
Voltaire, 1694-1778. Correspondence.
Princeton subject headings:
Authors, French--18th century--Correspondence.
Philosophers--France--Correspondence.
Voltaire, 1694-1778. Correspondence.