Columbia subject headings:
Steinbeck, John, 1902-1968--Criticism and interpretation.
Harvard subject headings:
America--In literature.
National characteristics, American, in literature.
Steinbeck, John, 1902-1968--Criticism and interpretation.
Steinbeck, John, 1902-1968--Knowledge--America.
Princeton subject headings:
Steinbeck, John, 1902-1968--Criticism and interpretation.