1979 Rams look back on Super Bowl XIV at the Rose Bowl – Orange County Register
Thundering Bull' Thornton is first Demon Great of the Game - Northwestern State University Athletics
Sidney Thornton, former Pittsburgh Steelers running back, dies at 68 - CBS Pittsburgh
Pittsburgh Steelers Team News, Fixtures and Results
Pittsburgh Steelers Team News, Fixtures and Results
Sidney Thornton, 2-time Steelers Super Bowl champion, dies at 68
Former Pittsburgh Steelers running back Sidney Thornton passes away at 68 - On3
Comparing 5-0 Steelers' 2020 roster to Pittsburgh's fabled 1978 team, the franchise's only other 5-0 team
Steelers Big Plays From Last 50 Years: 1979 - Thornton Gallops 75 Yards On Ride 38 Against Colts - Steelers Depot
Steelers Big Plays From Last 50 Years: 1979 - Thornton Gallops 75 Yards On Ride 38 Against Colts - Steelers Depot
Sidney Thornton: Steelers Mourn Death of Former Running Back - Sports Illustrated