A Babysitter for Billy Bear

We just got in A Babysitter for Billy Bear, by Miriam Moss; it is a sweet book that would be great for preparing a young child for the experience of staying home with a babysitter for the first time. Moss's gentle prose follows Billy Bear through the evening as his mother gets him ready for bed and then goes to her pottery class, leaving him with a friend. He can't sleep, and goes downstairs, telling the babysitter he is worried his mother won't be able to find her way home in the dark. She reassures him, showing him the streetlights and the moon and stars, and he goes to sleep. Nothing groundbreaking, but the story would help to get a child comfortable with the idea of going to bed without Mom.