Not since Carl Withers's A Rocket in My Pocket (1948) has there been such a grand compilation of familiar (and unfamiliar) rhymes and chants from the children's own tradition: riddles, games, wishes and taunts; poems about love, food, school, or animals; parodies, nonsense, and stories. Schwartz organizes them by topic and/or form and provides all kinds of fascinating supporting material: an engagingly conversational introduction; general explanatory notes plus full item-by-item sources, many of which are intriguing in themselves (``Avik Roy, age 13, Detroit...1986''; ``Editor's recollection, Ten Mile River Boy Scout Camp...1940''), or which give alternate versions; even an occasional tune. In b&w pen and watercolor, Truesdell's marvelous characters dance across the generously broad pages, peering inquisitively at the hilarious goings-on or gleefully joining in the shenanigans. It's hard to imagine a child who wouldn't greet this treasure trove with enthusiasm. Extensive bibliography (items ``of interest to young people'' are starred); index. (Folklore. 4+)