Liverpool travel to Old Trafford on Saturday for what will be their 200th official match against old foes Manchester United.
The sides first met in 1893, when Saturday's Premier League hosts were still known as Newton Heath, and have since become the two most decorated clubs in English football.
Some classic moments have been captured on camera as the sides battled for league titles and silverware down the years.
We've ploughed through the photo archives to pick out 30 stunning images that give an evocative glimpse into a historic rivalry.
Check out the gallery below.