Jonathan Emmett worked as an architect before becoming a children's author and novelty book designer, which may explain the inspiration behind Alphabet Street. He is the author of more than sixty books, including Bringing Down the Moon and The Princess and the Pig, and his work has been translated into more than thirty languages. He likes building things and taking things apart, playing games and solving puzzles, and letting his imagination run riot. Ingela P. Arrhenius is a freelance illustrator and graphic designer who has always loved to draw. She is the author-illustrator of Animals, City, Pop-up Ocean, Pop-up Jungle, and Pop-up Things That Go, as well as the illustrator of a series of lift-the-felt-flaps books. Ingela P. Arrhenius lives and works in Sweden.