Columbia subject headings:
Harvard subject headings:
Caricatures and cartoons--Congresses.
Portuguese literature--Themes, motives--Congresses.
Travel in literature--Congresses.
Travel in motion pictures--Congresses.
Travel writing--Congresses.
Princeton subject headings:
Travel in literature--Congresses.
Travel in motion pictures--Congresses.
Travelers' writings--History and criticism--Congresses.