Columbia subject headings:
American literature.
Belief and doubt in literature.
Harvard subject headings:
American literature--History and criticism
Belief and doubt in literature.
Bryant, William Cullen, 1794-1878
Cooper, James Fenimore, 1789-1851--Criticism and interpretation.
Emerson, Ralph Waldo, 1803-1882
Irving, Washington, 1783-1859--Anniversaries, etc.
Paine, Thomas, 1737-1809
Twain, Mark, 1835-1910--Criticism and interpretation.
Whitman, Walt, 1819-1892
Princeton subject headings:
American literature--History and criticism.
Belief and doubt in literature.