Columbia subject headings:
Architecture--Early works to 1800.
Architecture--France.
Architecture--Switzerland.
Harvard subject headings:
France--Description and travel.
Italy--Description and travel--Early works to 1800.
Italy--Description and travel.
Switzerland--Description and travel.
Princeton subject headings:
France--Description and travel.
Italy--Description and travel--Early works to 1800.
Italy--Description and travel.
Switzerland--Description and travel.