Columbia subject headings:
Theater--Production and direction--Europe--History--19th century.
Theater--Production and direction--Europe--History--20th century.
Harvard subject headings:
Theater--Production and direction--Europe--History--19th century.
Theater--Production and direction--Europe--History--20th century.
Theatrical producers and directors--Europe.
Princeton subject headings:
Theater--Production and direction--Europe--History--19th century.
Theater--Production and direction--Europe--History--20th century.
Theatrical producers and directors--Europe.