Columbia subject headings:
Literature publishing--United States--History--20th century--Dictionaries.
Paperbacks--Publishing--United States--History--20th century--Dictionaries.
Publishers and publishing--United States--History--20th century--Dictionaries.
Harvard subject headings:
Literature publishing--United States--History--20th century--Dictionaries.
Paperbacks--Publishing--United States--History--20th century--Dictionaries.
Publishers and publishing--United States--History--20th century--Dictionaries.
Reference works.
Princeton subject headings:
Literature--Publishing--United States--History--20th century--Dictionaries.
Paperbacks--Publishing--United States--History--20th century--Dictionaries.
Publishers and publishing--United States--History--20th century--Dictionaries.