The oldest children’s book you have – a book you’ve held onto since childhood.
I’ve got a lot of books that could potentially fit this category. Most of them are all packed away at my parent’s house, but I’ve kept a few (though not for any reason in particular). This one I’ve had for longer than I can remember. It was my mother’s before me and while I haven’t read it in a long while, I keep my battered copy tucked away on my bookshelf happily.
The book is called Curtain Going Up by Debra Weiss and illustrated by James R. Odbert. It was published in 1983 and chronicles the experience of a young dancer who replaces an injured performer and makes her debut in the theater. I really loved it as a kid.