Columbia subject headings:
Advertising--Congresses.
Associated Advertising Clubs of the World. Convention (20th : 1924 : London, England)
Harvard subject headings:
Advertising--Congresses
Associated Advertising Clubs of the World (20th convention : 1924 : London)
Associated Advertising Clubs of the World. Convention (20th : 1924 : London, England)
Princeton subject headings: