The Chicago Tribune is an American daily newspaper based in Chicago, Illinois. Founded in 1847, and 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. As of 2023, it is the most-read daily newspaper in the Chicago metropolitan area and the Great Lakes region and the ninth-largest newspaper by print circulation in the United States.
https://en.wikipedia.org/wiki/Chicago_Tribune