Columbia subject headings:
American drama--20th century--History and criticism--Periodicals.
Theater--United States--History--20th century--Periodicals.
Harvard subject headings:
American drama--20th century--History and criticism--Periodicals.
Theater--History--20th century--Periodicals.
Princeton subject headings:
American drama--20th century--History and criticism--Periodicals.
Theater--History--20th century--Periodicals.