Roger Duvoisin was born in Geneva in 1900. He studied art in Paris, and his first jobs included designing scenery, making textiles, and painting murals. He moved to New York City. Roger Duvoisin illustrated over 100 books of which he wrote 40. In 1947 he won the Caldecott Medal for White Snow, Bright Snow by Alvin Tresselt and in 1966 their Hide and Seek Fog won a Caldecott Honor.

Clement C. Moore (1779-1863) was an American professor of Oriental and Greek Literature as well as Divinity, who lived in New York.