I think Cliff Stout was the receiver and it was for 99 yards. I'm not sure it happened at three rivers though but this is the reception I am talking about. I think the QB was Terry Bradshaw.
80
86
60 yards
Bob Hayes
The longest pass completion in Super Bowl history was 85 yards when Muhsin Mahammad hauled in a pass for the Carolina Panthers in Super Bowl XXXVIII. This is not a touchdown pass just a completion pass.
the snake, green and missouri
The longest pass completion in Steelers history is 95 yards. Ben Roethlisberger to Mike Wallace on October 23, 2011.
The longest pass play in Dallas Cowboys history occurred at Washington on November 13, 1966, when wide receiver Bob Hayes caught a 95-yard touchdown pass from quarterback Don Meredith.
The longest pass in Super Bowl history was 85 yards from Jake Delhomme of the Panthers to Muhsin Muhammed in Super Bowl XXXVIII against the Patriots.
Troy Edwards.Through Week 1 of the 2009 season, the longest pass completion in Jaguars' history is 84 yards from Byron Leftwich to Troy Edwards on September 28, 2003 against the Houston Texans.
Kosar to Slaughter most likely
Currently of September 12, 2011 it is Tom Brady