10-11-10: Arizona Cardinals Bird Droppings - Revenge of the Birds
Clark Haggans re-signed by Arizona Cardinals - Sports Illustrated
Clark Haggans dies; former Steelers linebacker was 46
John Clayton's Last Call - ESPN
40 Years of Greatness : The Steelers Linebackers, News, Scores, Highlights, Stats, and Rumors
Pro Football Journal: Pittsburgh Steelers' Career Years—Top Twenty Outside Linebackers
Badgers LBs all set inside, not so much outside, Sports
40 Years of Greatness : The Steelers Linebackers, News, Scores, Highlights, Stats, and Rumors
A Super real deal – Orange County Register
PA Sports News, Sports, Jobs - The Express
Joe Campbell, Super Bowl Champion Defensive End, Dead at 68