Not too easy to read, but it is, in fact, a flier for a rail excursion from Wellington for a mid-week match at West Bromwich Albion, when they played Luton Town on 15th April 1959.
The Albion won the match 2-0, with goals from Ronnie Allen and David Burnside. Later in the season, Luton Town faced Nottingham Forest in the FA Cup Final, losing 2-1.
It was the last season, so far (!), when the Wolves won the league title.