Columbia subject headings:
Harvard subject headings:
Courtship--Switzerland, French-speaking--History--19th century.
Courtship--Switzerland, French-speaking--History--20th century.
Fiancées--Switzerland, French-speaking--Correspondence.
Fiancés--Switzerland, French-speaking--Correspondence.
Love-letters--Switzerland, French-speaking--History--19th century.
Love-letters--Switzerland, French-speaking--History--20th century.
Princeton subject headings:
Courtship--Switzerland, French-speaking--History--19th century.
Courtship--Switzerland, French-speaking--History--20th century.
Fiancées--Switzerland, French-speaking--Correspondence.
Fiancés--Switzerland, French-speaking--Correspondence.
Love-letters--Switzerland, French-speaking--History--19th century.
Love-letters--Switzerland, French-speaking--History--20th century.