Pro Football Journal: Charlie Krueger—January 28, 1937–February 5, 2021
49ers' Hall of Famer Charlie Krueger, rugged defensive tackle, dies at 84
The greatest San Francisco 49ers of all time
49er great, Hall of Famer Charlie Krueger dies at 84
CHARLIE KRUEGER San Francisco 49ers 1969 Wilson Throwback NFL Football Jersey
2019 football season brings major convergence of past, present
Top 10 all-time NFL players from Texas A&M
Calaméo - 2014 Drake Football Guide
Michigan State Football Gameday Magazine 2010 - Minnesota by Ben Phlegar - Issuu