Steel Curtain wins vote as NFL's greatest defense
Zim Reapers' need playoff wins to match Vikings' famed 'Purple People Eaters' status
NFL's All-Time Team: Lawrence Taylor headlines defensive front
Purple People Eaters - Wikipedia
Broncos' oddity: NFL's best defense, worst offense
10 greatest single-season performances in Pittsburgh Steelers history
Pittsburgh Steelers Steel Curtain Defense
NFL's best players ever at every defensive position -- Is Lawrence Taylor the GOAT edge rusher? Ronnie Lott or Ed Reed at safety? - ESPN
My All-Time Steelers DefenseWith A Twist - Steelers Depot
Steelers in line for yet another NFL sack record
25 Greatest Linebackers in NFL History
NFL's All-Decade Team of the 1970s - DEFENSE