Hi, they were due to play Hull FC but the match was postponed and played in March 1970.

I have found a copy of the programme for this match, so I assume it was either abandoned or cancelled at very short notice.I hope this helps you.

The Hull FC website has an archive of results which backs this uphttps://www.hullfc.com/hullfc/contents/?page_id

Thanks to everyone for the information

It was a bad winter that year with continued -0 temperatures for weeks.
I recall one match being cancelled for a huge snowfall when the away team wasn't able to get to Odsal.
Looking at the Bulls records and seeing no other corresponding occurance I suspect this was the one.

So there is a programme available for this match even though it was cancelled / abandoned but I presume it is not widely available