To sort out who's who and what's what in the enchanting, vexing world of Barbies(R) and Ninja Turtles(R), Tinkertoys(R) and teddy bears, is to begin to see what's become of childhood in America. It is this changing world, and what it unveils about our values, that Gary Cross explores in Kids' Stuff, a revealing look into the meaning of American toys through this century.