Columbia subject headings:
Harvard subject headings:
Canada--Boundaries--United States.
Canada--Description and travel.
Canada--Relations--United States.
Laxer, James--Travel--Canada.
Laxer, James--Travel--United States.
Northern boundary of the United States--Description and travel.
United States--Boundaries--Canada.
United States--Description and travel.
United States--Relations--Canada.
Princeton subject headings:
Canada--Boundaries--United States.
Canada--Relations--United States.
United States--Boundaries--Canada.
United States--Relations--Canada.