Wicked: The Life and Times of the Wicked Witch of the West (Wicked Years, #1)

by Gregory Maguire

“The danger is a foreigner,” said Turtle Heart, “not a home-grown king or queen. The old women, and the shamans, and the dying: They to see a stranger king, cruel and mighty.”

Is this a foreshadowing of the Wonderful Wizard of Oz?