An interesting collection. We had Ron bowing out of League refereeing at Watford v Southport on 29th April 1978, but it now appears that he refereed Plymouth v Bradford City two days later. I will amend the 'Final Games' database. His first Div 1 game was Palace v Huddersfield in March 1971, a quite dreadful and humiliating game from the home team's point of view. I was trying to place some of the linesmen but cannot see any I recognise. I love the 'Ron Crabb, Referee and team' photo about halfway down page 1, where both of the linesmen looked as though they'd been on the pies and lager the night before! I think this might have been a pre-season friendly. Ron was a prison officer and was a good if somewhat underrated referee, as you suggest reflector.