Krull, Kathleen. The Boy on Fairfield Street. New York: Random House Children’s Books, 2004.

Cohen, Charles D. The Seuss, the Whole Seuss, and Nothing But the Seuss. New York: Random House Children’s Books, 2004.

San Diego Musuem of Art. Dr. Seuss from Then to Now: A Catalogue of the Retrospective Exhibition. New York: Random House, 1986.

Morgan, Judith & Neil. Dr. Seuss & Mr. Geisel: A Biography. New York: Da Capo Press, 1995.

Lathem, Edward Connery. Who's Who & What's What in the Books of Dr. Seuss. New Hampshire: Dartmouth University, 2000.