Today this kid came to the desk and first asked Annabelle for ambulance books. She passed the question to me because it was my turn to be on the desk. I thought that would be easy -- just find something in J NF.
But no, he said the book is in the back of the #9 Bone book by Jeff Smith. I found the book #9 and wondered what that had to do with an ambulance. He opened the book to the last page and showed me an ad for the AMULET books by Kibuishi.
[Reminds me of the worst library book ever! --Marian]