Neil Cornrich & NC Sports, LLC: 2011
MSU Football Gameday Magazine - Iowa by Ben Phlegar - Issuu
Adrian Clayborn Dominant Day Brings Back Memories Of His Iowa Days
Karl Klug, honorary captain – University of Iowa Athletics
Twin-spirational: Ex-Caledonia football star Karl Klug draws motivation from twin brother, Kevin
Coin toss football hi-res stock photography and images - Page 5 - Alamy
Tennessee Titans' tough guys Karl Klug tries to keep up with twin
2013 University of Iowa football media guide by Iowa Athletics - Issuu
Mike Meyer kicking down Hawkeye scoring marks
Karl Klug – University of Iowa Athletics