3Piers Brendon,The Life And Death of The Press Barons (Atheneum Corporation Ltd,1983).
4George H, Douglas,The Golden Age of the Newspaper,(Westport,Conneeticut: Greenwood Press,1999) 99.
5Frank Luther Mott, American Journalism, A History of Newspapers in the United States Through 250 years 1690-1940 (New York,Macmillan Company, 2000) 434-435.