Columbia subject headings:
Harvard subject headings:
Journalism--Europe--History--19th century.
Journalism--Europe--History--20th century.
Journalism--United States--History--19th century.
Journalism--United States--History--20th century.
Reporters and reporting--Europe--History--19th century.
Reporters and reporting--United States--History--19th century.
Reporters and reporting--United States--History--20th century.
Princeton subject headings:
Journalism--Europe--History--19th century.
Journalism--Europe--History--20th century.
Journalism--United States--History--19th century.
Journalism--United States--History--20th century.