Sean Petrie writes books for kids, including Welders on the Job and Crash Corner. He also writes poetry, usually on the spot on a 1928 Remington typewriter. His poetry books include Typewriter Rodeo and the Seattle-based Listen to the Trees. He lives in Austin, Texas.

Carl Pearce lives in north Wales with his wife, Ceri. When not lost in his illustration work, he enjoys watching films, reading books, and taking long walks along the beach. He graduated from the North Wales School of Art and Design as an illustrator. His first book was published on his graduation day in 2004. He has since gone on to illustrate countless books for children.