Ingri d'Aulaire and Edgar Parin d'Aulaire were American writers and illustrators of children's books who worked primarily as a team, completing almost all of their well-known works together. The couple immigrated to the United States from Europe and worked on books that focused on history such as Abraham Lincoln, which won the 1940 Caldecott Medal. They were part of the group of immigrant artists composed of Feodor Rojankovsky, Roger Duvoisin, Ludwig Bemelmans, Miska Petersham and Tibor Gergely, who helped shape the Golden Age of picture books in mid-twentieth-century America.

The Randolph Caldecott Medal, frequently shortened to just the Caldecott, annually recognizes the preceding year's "most distinguished American picture book for children". It is awarded to the illustrator by the Association for Library Service to Children (ALSC), a division of the American Library Association (ALA). The Caldecott and Newbery Medals are considered the most prestigious American children's book awards. Beside the Caldecott Medal, the committee awards a variable number of citations to runners-up they deem worthy, called the Caldecott Honor or Caldecott Honor Books.