Jeong-hee Nam has a graduate degree in children's literature. She has written several picture books, including The Green Festival: Recycling Paper to Save Trees, A Very Special Chocolate, Snow Train, and The Kalundborg Gang: Alternative Energy (all Big and Small Publishing). She lives in South Korea.

Lucia Sforza is an Italian illustrator who has never been content to work with a mere pencil. She graduated from the Academy of Fine Arts in Rome, where she studied engraving, monotyping, and intaglio printing. She has illustrated many international picture books, and her artwork has been displayed in children's illustration exhibitions throughout the world.