Hello...recognise this is a really long shot, but does anyone remember textbooks from the 1980s called Patterns and Sequences written by Maria Campbell Hogg? I think they were a staple of the Scottish primary curriculum at that time. They were published by Oliver & Boyd who no longer exist having gone out of business in the 1990s. I’m trying to get a copy of the textbooks but without any luck. Any ancient copies hidden in the dark depths of classroom store cup-boards?