Buell, E. L. "The Twenty-One Balloons."

New York Times (May 4, 1947): 41.

This review emphasizes the deadpan humor that characterizes the novel's text and illustrations.

Du Bois, William Pene. "Newbery Acceptance Paper." Horn Book 24 (JulyAugust 1948): 235-244. Du Bois provides a delightful account of his childhood experiences in France.

Du Bois, Yvonne. "William Pene Du Bois, Boy and Artist." Horn Book 24 (July-August 1948): 245-250. The author's sister offers a remembrance of his boyhood.

Eaton, A. T. "The Twenty-One Balloons."

Christian Science Monitor (December 11, 1947): 6. Focused on the author's combination of science and imagination, this review also praises the distinctive illustrations that add authenticity to the narrative.

Kirkpatrick, D. L., ed. Twentieth-Century Children's Writers. New York: St.

Martin's Press, 1983. A brief biography of du Bois includes listings of his publications for children and the books that he has illustrated.

"The Twenty-One Balloons." Saturday Review of Literature 30 (April 19, 1947). This review stresses...