Columbia subject headings:
Canada--Relations--Southern States.
Southern States--Relations--Canada.
Harvard subject headings:
American literature--Canada--Congresses.
Canada--Relations--South America--Congresses.
Canada--Relations--Southern States.
Canadian literature--South America--Congresses.
South America--Relations--Canada--Congresses.
Southern States--Relations--Canada.
Princeton subject headings:
American literature--Canada--Congresses.
Canada--Relations--South America--Congresses.
Canadian literature--South America--Congresses.
South America--Relations--Canada--Congresses.