Bierhorst, John. The Mythology of South America. New York: Morrow Junior Books, 1987. This major work of scholarship offers a comprehensive guide to the major myths from the northern Andes to the remote regions of the Amazon basin. Includes maps and black-and-white illustrations.

Clark, Ann Nolan. "Newbery Award Acceptance." Horn Book 29 (August 1953): 249-257. This article details Clark's models and the sources for her fiction.

Massee, May. "Ann Nolan Clark." Horn Book 29 (August 1953): 258-262. This companion piece to the Newbery speech is a biographical sketch that details the experiences that shaped both Clark's life and her writings.