Oliver Jeffers is an author-illustrator of many books for children, including A Child of Books with Sam Winston; Once Upon an Alphabet, which was named a Boston Globe–Horn Book Award Honor Book; Lost and Found, which was a Nestlé Children’s Book Prize Gold Medal winner; and Here We Are: Notes for Living on Planet Earth, which was named a Time Magazine Top Ten Book of the Year. He is also the illustrator of the #1 New York Times bestseller The Day the Crayons Quit, written by Drew Daywalt, as well as a fine artist whose work ranges from figurative painting to installation. In 2022, he was named a member of the Order of the British Empire (MBE) for his services to the arts. Born in Australia, Oliver Jeffers grew up in Northern Ireland and now lives and works in Brooklyn.

Sam Winston is a fine artist whose work has been exhibited worldwide and is held in many permanent collections. Institutions that have exhibited or currently house his work include the Museum of Modern Art in New York, the Getty Research Institute in Los Angeles, the Tate Galleries in London, the Victoria and Albert Museum in London, and the Library of Congress in Washington, DC. He is the cocreator of A Child of Books with Oliver Jeffers and the author-illustrator of One & Everything, which is currently featured in an exhibit on alphabets at the Bodleian, Oxford University, and which School Library Journal hailed in a starred review as a “a story that works on many levels for various ages, from a simple fable about greed to a wake-up call to value linguistic diversity.” Sam Winston lives and works in London.