Columbia subject headings:
Harvard subject headings:
Book industries and trade--United States
Books and reading--United States
Paperbacks--Publishing--United States.
Popular culture--United States
Popular literature--United States.
Publishers and publishing--United States--History--20th century
Princeton subject headings:
Book industries and trade--United States.
Books and reading--United States.
Paperbacks--Publishing--United States.
Popular culture--United States.
Popular literature--United States.
Publishers and publishing--United States--History--20th century.