The Arts Map is an interactive on-line map of artist’s studios, galleries, museums and arts organizations. Artists are categorized, and book arts is one of the categories! Above is the map for all the people in the book arts category — although since people self-categorize, my conclusion from a random sampling of places on the map is that most really don’t produce artist’s books or hand bind any sort of book, which I guess speaks to the misunderstanding (or ambiguity) of exactly what “book arts” means. Take a look here.
I suspect the reason so many people are listing themselves in non-applicable categories is that they suffer from the delusion that if somebody clicks on their “book arts” pin, the viewer will be so entranced by the artist’s thumbnail image of non-book artwork that he/she will go on to the artist’s website or even to contact the artist about buying.