Columbia subject headings:
Sherwood, Robert E. (Robert Emmet), 1896-1955.
Harvard subject headings:
Didactic drama, American--History and criticism.
Ethics in literature.
Sherwood, Robert E. (Robert Emmet), 1896-1955--Ethics.
Princeton subject headings:
Didactic drama, American--History and criticism.
Ethics in literature.
Sherwood, Robert E. (Robert Emmet), 1896-1955--Ethics.