Columbia subject headings:
Harvard subject headings:
American literature--History and criticism
Canadian literature--History and criticism
Cultural pluralism--North America--History.
Ethnic groups--North America--History.
Multiculturalism--North America--History.
Princeton subject headings:
American literature--History and criticism.
Canadian literature--History and criticism.
Cultural pluralism--North America--History.
Ethnic groups--North America--History.
Multiculturalism--North America--History.