The short answer is that
Can I See Your I.D.?
is no longer being printed by its publisher, meaning that libraries can't get copies through their regular channels. That makes me sad, because I worked hard on that book. I was proud of it, and I always believed there was an audience for it that simply did not know that the book existed. But it happens. A lot.
As someone who always loves learning more about the children's literature ecosystem, and as someone who can certainly relate to this particular topic, I so appreciate Lindsey's efforts and the voices she wrangled (including Don Tate, Kathi Appelt, and Uma Krishnaswami) to share their own perspectives.