Columbia subject headings:
Bell Canada--Employees--History.
Documentary films--Canada.
Telephone companies--Canada--Employees.
Telephone operators--Canada--History.
Women in advertising.
Women--Employment--Canada.
Harvard subject headings:
Bell Canada--Employees--History.
Telephone companies--Canada--Employees.
Telephone operators--Canada--History.
Women in advertising
Women--Employment--Canada
Princeton subject headings: