I was there (Wolves). It was my (first) reality check watching and supporting Alty.
PS. There have been quite a few others over the years.
From the match day programme (Saturday 22nd January 1966)
"WELCOME TO A FINE TEAM
As we welcome Cheshire League side Altrincham to Molineux today we do so with the sincerity of club to club rather than from a high status to a lower one. Let us assure the many thousands who will have made the trip from Cheshire that there is no condescension in our greeting to a side who, without a shadow of a doubt, have already proved themselves worthy of the place they have won in the third round of the FA Cup.
But whatever the outcome, all of us in Wolvehampton will wish them well in their outstanding effort to win the Cheshire League title for the first time in their history. Unbeaten so far they certainly seem to be on the way towards it".