Gregory Royal Pratt Chicago Tribune

The Chicago Tribune is an American daily newspaper based in Chicago, Illinois, United States. Founded in 1847, it was formerly self-styled as the "World's Greatest Newspaper", a slogan from which its once integrated WGN radio and WGN television received their call letters. It is the most-read daily newspaper in the Chicago metropolitan area and the Great Lakes region, and the sixth-largest newspaper by print circulation in the United States.