Book excerpt: "David Kamp takes readers behind the scenes to show how ... programs [such as Mister Rogers' Neighboorhood, Sesame Street, and Schoolhouse Rock] made it on air, ... [explaining] how ... like-minded individuals found their way into television, not as fame- or money-hungry would-be auteurs and stars, but as people who wanted to use TV to help children ... [The book] captures a period in children's television where enlightened progressivism prevailed, and shows how this period changed the lives of millions"--