About 65 years ago my local library at the time had a fascinating book that I borrowed many times.
I am trying to track it down but have forgotten both the title and the authors. What I can remember is that it contained diagrams of all the nets of the platonic solids and probably the more complex ones. There was also a chapter on interesting functions and their graphs like the leminiscate of bernoulli. And lots more. Although hard covered, it was about the size of a medium paperback.
The book was in the mathematics section of public library in Eltham, a suburb of South East London, UK. So not a major library, but hardly "small town" either. I guess they had about 3 or 4 shelves of maths books, perhaps 1/3 a bookcase among around 6 bookcases of science mathematics and engineering. I'm guessing their entire collection, fiction, non-fiction and reference was about 100,000 books.
I would have thought that the book was targeted at someone with knowledge and interest in mathematics, a teacher who wanted interesting projects (eg the nets) for their more advanced students or as general interest reading for the mathematics undergraduate. It was shelved along with books such as Littlewood's "A Mathematician's Miscellany", another of my favourites.
I'm sorry I can't remember any more about it, but I'd know it if I saw it.