Sarah Hayes is the author of many books for children, including Mary, Mary, illustrated by Helen Craig and Eat Up, Gemma, which she illustrated herself. Barbara Firth is a highly acclaimed illustrator who has numerous picture books to her credit, including many in partnership with author Martin Waddell. These include Can't You Sleep, Little Bear? (Winner of the Smarties Book Prize and the Kate Greenaway Medal); Let's Go Home, Little Bear; You and Me, Little Bear; Well Done, Little Bear; The Park in the Dark (Winner of the Kurt Maschler Award); We Love Them; Sam Vole and His Brothers; and Tom Rabbit.