Columbia subject headings:
American drama--20th century--History and criticism.
English drama--20th century--History and criticism.
Historical drama, American.
Historical drama, English.
History in literature.
Harvard subject headings:
American drama--20th century--History and criticism
English drama--20th century--History and criticism
Historical drama, American.
Historical drama, English.
History in literature.
Princeton subject headings:
American drama--20th century--History and criticism.
English drama--20th century--History and criticism.
Historical drama, American.
Historical drama, English.
History in literature.