Columbia subject headings:
Harvard subject headings:
Theater--Europe--History--19th century--American influences.
Theater--Europe--History--20th century--American influences.
Theater--North America--History--19th century--European influences.
Theater--North America--History--20th century--European influences.
Theater--South America--History--19th century--European influences.
Theater--South America--History--20th century--European influences.
Theatrical agents.
Princeton subject headings:
Theater--Europe--History--19th century--American influences.
Theater--Europe--History--20th century--American influences.
Theater--North America--History--19th century--European influences.
Theater--North America--History--20th century--European influences.
Theater--South America--History--19th century--European influences.
Theater--South America--History--20th century--European influences.
Theatrical agents.