For those of you in the area who can get there, this appearance is around her picture book The Animals Would Not Sleep, which is part of the Storytelling Math series from Charlesbridge Publishing.
Also note that free signed copies of the book will be given to each child who registers. But, remember, separate preregistration is required for each child coming in order for each of them to get a book. You can find the registration form at the Guilford Public Library link above, but, heck, to make this easy, I'm going to link it again. Here.
A great opportunity.