Herman Ridder



  • Emery, Edwin. History of the American Newspaper Publishers Association. . Minneapolis: The University of Minnesota Press, 1950.
  • Merritt, Davis. Knightfall: Knight Ridder and How the Erosion of Newspaper Journalism Is Putting Democracy at Risk. . New York: AMACOM: American Management Association, 2005.
  • Wittke, Carl. Refugees of Revolution: The German Forty-Eighters in America. . Philadelphia: University of Pennsylvania Press, 1952.
  • Wittke, Carl. The German-Language Press in America. . University of Kentucky Press, 1957.