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. In the 1850s, under Joseph Medill, the Chicago Tribune became closely associated with the Illinois politician Abraham Lincoln, and the then new Republican Party's progressive wing.