Columbia subject headings:
Madrid (Spain)--Description and travel.
Madrid (Spain)--Social life and customs.
Travelers--Spain--Madrid--History.
Visitors, Foreign--Spain--Madrid.
Harvard subject headings:
Madrid (Spain)--Description and travel.
Madrid (Spain)--Social life and customs.
Spain--Foreign public opinion.
Travelers' writings--History and criticism.
Visitors, Foreign--Spain--Madrid--Attitudes.
Princeton subject headings: