Columbia subject headings:
Harvard subject headings:
Advertising--Books--United States--History--20th century.
Book industries and trade--United States--History--20th century.
Publishers and publishing--United States--History--20th century
Princeton subject headings:
Advertising--Books--United States--History--20th century.
Book industries and trade--United States--History--20th century.
Publishers and publishing--United States--History--20th century.