Regarding that orange ball pic in the OP: that is Bangor City v Liverpool in a friendly on 27th Jan 1979. Liverpool captain is Emlyn Hughes, his dad was a Welsh rugby player, by the by.
The match was played to give Liverpool some game time when many fixtures were postponed because of the wintry weather accross the country. Liverpool didn't play a single league game in January.
Readers may recall that the UK was in the midst of "the Winter of discontent" with heavy snow that wasn't shifted because of strikes by local government workers. In May Maggie Thatcher won her first General Election.
Sources: Google.