It is a collection of handwritten letters to God from little children. I hope they bless you as much as they did me.
And maybe, just maybe, this is what God desires from all of us! For it was Jesus Himself Who told us (in the New Testament Gospel of Matthew, chapter 18, verse 3) that unless we become as little children, we will never enter the kingdom of Heaven!
SOURCE: Available widely on the internet. See, for instance: http://myrtle-fragrance.blogspot.com/2012/04/and-god-laughed-through-childs-eyes.html.
SCRIPTURE SOURCE: http://biblehub.com/matthew/18-3.htm.