Deborah Hopkinson is the author of many highly acclaimed picture books, including Annie and Helen; A Boy Called Dickens; Sky Boys: How They Built the Empire State Building, a Boston Globe–Horn Book Honor Book; and Abe Lincoln Crosses a Creek: A Tall, Thin Tale, an ALA-ALSC Notable Children’s Book. She lives in Oregon with her family.

Charlotte Voake is the author-illustrator of Ginger, shortlisted for the Kate Greenaway Medal and winner of the Nestlé Smarties Gold Award, Ginger Finds a Home and Hello Twins, one of the 2006 New York Times Ten Best Illustrated Books. She is also the illustrator of Steve Voake’s Insect Detectives and Vivian French’s Caterpillar Butterfly. She lives in Surrey.