David and Jeanie Stiles have written 25 how-to books on backyard building projects that range from treehouses, playgrounds, and garden sheds, to tiny houses, workshops and cabins--and have sold over one million books. David Stiles is an industrial designer, builder, and illustrator and Jeanie Stiles is a writer, photographer, and actress. Together they have received several awards, among them the ALA's Notable Children's Book Award for Treehouses You Can Actually Build, and their articles have appeared in many magazines and newspapers including Architectural Digest, Better Homes and Garden, and The New York Times. They have appeared on numerous television programs, including HGTV, The Discovery Channel, and The Today Show during which they built a treehouse in three hours. David, a graduate of Pratt Institute and the Academy of Fine Arts in Florence, Italy, received two awards from the New York Planning Commission for his playground design for children with disabilities. They live in New York, New York.