WGN-TV/WGN-DT, Chicago -- WGN-TV, whose call letters are derived from the Chicago Tribune's first slogan, "World's Greatest Newspaper", hit the airwaves on April 5, 1948 on Channel 9 in Chicago from its studios at Tribune Tower. Colonel Robert McCormick led the Tribune Company into the TV era, believing that "in television, we have embarked upon another of America's adventures."

Check out WGN-TV photos from the 1940s.

Check out WGN-TV photos from the 1950s.

Check out WGN-TV photos from the 1960s.

Check out WGN-TV photos from the 1970s.

Learn about the history of WGN-TV in the 1940s.

Learn about the history of WGN-TV in the 1950s.

Learn about the history of WGN-TV in the 1960s.

Learn about the history of WGN-TV in the 1970s.

Learn about the history of WGN-TV in the 1980s.

Learn about the history of WGN-TV in the 1990s.

Learn about the history of WGN-TV in the 2000s.