Ozma Of Oz

"Westward the fertile Land of Ev suddenly ended a little way from the palace, and the girl could see miles and miles of sandy desert that stretched further than her eyes could reach. It was this desert, she thought, with much interest, that alone separated her from the wonderful Land of Oz, and she remembered sorrowfully that she had been told no one had ever been able to cross this dangerous waste but herself.

Once a cyclone had carried her across it, and a magical pair of silver shoes had carried her back again. But now she had neither a cyclone nor silver shoes to assist her, and her condition was sad indeed. For she had become the prisoner of a disagreeable princess who insisted that she must exchange her head for another one that she was not used to, and which might not fit her at all."