Here are 17 photos from our archive from that memorable day in the Midlands.
5. Players in the dressing room
Sheffield United v Leicester City - 5 May 1990 Photo: Peter Tuffrey
6. Carl Bradshaw stripped of his clothes...
...and is briefly stopped by an official unaware of his identity!
Sheffield United v Leicester City - 5 May 1990 Photo: Peter Tuffrey
7. Brian Deane ecstatic after scoring and putting United firmly on the road to promotion.
Sheffield United v Leicester City - 5 May 1990 Photo: Peter Tuffrey
8. United's bench watch on
Sheffield United v Leicester City - 5 May 1990 Photo: Peter Tuffrey