This is the fictional story of one of these librarians. Making it more interesting, Cussy Mary is Blue, coming from a small group, now disappeared, of people who intermarried their way into blueness with a recessive gene. (methemoglobinemia ) Her blueness made her an outcast, much as blackness did some of her neighbors. (There is a lot of racism on display here).
To really stand out for me though, this story would have had to have been more complex. Characters are either all good or all bad. It's straight -forward simplicity reminded me of a YA novel more than one for adults. I expected it to have more information about how this NRA system worked or at least more discussion of the books she gave out and how she secured them. For a book about books, there is not much about books in it. It was certainly worth reading, if only for its discussion of the Blue people. But I find the many great reviews it had received a bit puzzling.
Apparently soon after this book was published, JoJo Moyes published a book on the packmule librarians too. (THE GIVER OF STARS). It would be interesting to see if that book offered a more nuanced and informative view than this one.
Again, not a bad book at all but a trifle simplistic.
For more reviews, see Barrie Summy's blog.