Columbia subject headings:
Callaghan, Morley, 1903-1990--Criticism and interpretation--Congresses.
Harvard subject headings:
Callaghan, Morley, 1903---Criticism and interpretation--Congresses.
Callaghan, Morley, 1903-1990--Criticism and interpretation--Congresses.
Canada--In literature--Congresses.
Princeton subject headings: