I just stumbled across this article at Flavorwire about wonderful multicultural children's books. It's a great primer on books for a variety of ages. I read Inside Out and Back Again last year and it was a beautiful tale. This is just a starter list and I could probably rattle off a dozen more that any child should read.
While I missed Christopher Paul Curtis's Bud Not Buddy, I adored his Mighty Miss Malone, a depression era tale with an amazingly sweet and feisty heroine.
Check them out and if you know of others, please comment and share!