Book about digits 0-9?

Okay, smart people. I’m at a conference and a colleague has told me about a book he remembers but is unable to identify. Can you help? The book is about the digits (0-9) from multiple perspectives, including the aesthetics of their shapes as well as their history and other considerations. The cover of at least the paperback was black, the title is at least several words and is not all written on the same horizontal line on the cover, and may be calligraphic or swirly. He thinks he read it in the early to mid-1980’s.

Notions? Thanks.

“The beginners Guide to Constructing the Universe” by Schneider

Amazon link

Zero: The Biography of a Dangerous Idea

It doesn’t exactly fit your description, but the cover description made me think of it. Great book.

Perhaps From zero to infinity : what makes numbers interesting by Constance Reid. I read it many years ago and I remember liking it but not much else about it.

This one also looks promising, but I never read it: Number Words and Number Symbols by Karl Menninger

Thank you all. I am waiting for my fellow conference-goer to look at these on Amazon to see if one is the book her remembers. If so, he found it an enjoyable book. I’ll report back.