FILE - Chicago Bears great Dick Butkus watches from the sideline during the first half of the team's NFL football game against the Houston Texans on Sept. 25, 2022, in Chicago. (AP Photo / Nam Y. Huh, File)

Dick Butkus, fearsome Hall of Fame linebacker for the Chicago Bears, has died at age 80.

Chicago Bears running back Walter Payton. (Photo © Chicago Tribune)

After spending months combing through nearly 100 years of archival photographs and newspaper articles, the Chicago Tribune is releasing a comprehensive look at the Chicago Bears.