Columbia subject headings:
Harvard subject headings:
American literature--West (U.S.)--History and criticism--Congresses.
Canadian literature--History and criticism--Congresses
West (U.S.)--In literature--Congresses.
Princeton subject headings:
American literature--The West--History and criticism--Congresses.
Canadian literature--History and criticism--Congresses.
West (U.S.)--In literature--Congresses.