That season was significant in other ways, too, as England were hosting the 1966 World Cup and Old Trafford was among the stadia to be upgraded at the government's expense, with the North Stand being rebuilt into a cantilevered structure.
United won another league title in 1966-67, going unbeaten in their last 20 games and making sure of top spot by winning 6-1 over West Ham, qualifying them for the European Cup the next season and laying the groundwork for the climactic triumph of that era.