Columbia subject headings:
Harvard subject headings:
Theater--Alaska--History--19th century.
Theater--British Columbia--History--19th century.
Theater--Yukon Territory--History--19th century.
Theater--Yukon--History--19th century.
Princeton subject headings:
Theater--Alaska--History--19th century.
Theater--British Columbia--History--19th century.
Theater--Yukon Territory--History--19th century.