Columbia subject headings:
Canadian literature--20th century--History and criticism.
Communism and literature--Canada--History--20th century.
Harvard subject headings:
Canada--Intellectual life--20th century.
Canadian literature--20th century--History and criticism
Communism and literature--Canada--History--20th century.
Politics and literature--Canada--History--20th century.
Progressivism in literature.
Radicalism in literature.
Radicalism--Canada--History--20th century.
Princeton subject headings:
Canadian literature--20th century--History and criticism.
Communism and literature--Canada--History--20th century.