"Curious George" was an instant success, and the Reys were commissioned to write more adventures of the mischievous monkey and his friend, the Man in the Yellow Hat. They wrote seven stories in all, with Hans mainly doing the illustrations and Margret working mostly on the stories, though they both admitted to sharing the work and cooperating fully in every stage of development. At first, however, covers omitted Margret's name. In later editions, this was changed, and Margret now receives full credit for her role in developing the stories. "Curious George Takes a Job" was named to the Lewis Carroll Shelf Award list in 1960.