“John knows everything about me, and I know everything about him.” Some of the deeper elements of childhood friendship are illuminated in Zolotow’s expertly crafted first-person narrative about authentic knowledge of a friend’s preferences, differences, fears, and follies. Harvey’s affectionately rendered, colorful artwork characterize the boys while cheerfully exaggerating some of their exploits. Zolotow’s skill in observing and then capturing deeply felt emotions characterizes her consistently outstanding picture-book writing. (Ages 2-4)