Not unreleased it seems, but a hard to find set of titles which aid with writing which had been missing for some time.
Allan Pinkerton has kindly preserved 3 of 4 titles in the series, which we are pleased to be able to present here for download, along with manuals and leaflet scans.
The 4th title: Castles and Creatures was still at large, but in May 2022 – Allan also found and preserved this title too, so here it is!
With thanks to Allan Pinkerton for his fantastic preservation efforts and case closed!
Contributions: Allan Pinkerton