The cover-art by Samantha Keely Smith for Richard's Variants-series is featured in a new book on album-covers, called Bill Smith Studio Cover Stories - 5 Decades Of Album Art. (https://redplanetmusicbooks.com/products/cover-stories)
It's nice to mention both Richard and Samantha were interviewed. Samantha confesses that the cover of Japan's Oil In Canvas was an early influence on her.