When L. Frank Baum wrote The Wonderful Wizard of Oz, he created an American myth that has endured the test of time. Echoes of Dorothy and her friends are everywhere: popular television shows often have an Oz episode, novelists borrow character types and echo familiar scenes, and every media--from Broadway to The Muppets--has some variation or continuation of Baum's work. This collection of essays follows Baum's archetypal characters as they've changed over time in order to examine what those changes mean in relation to Oz, American culture and basic human truths. Essays also serve as a bridge between academia and fandom, with contributors representing a cross-section of Oz scholarship from backgrounds including The International Wizard of Oz Club and the Children's Literature Association.