duopress labs is the creative team, led by Mauricio Velázquez de León, responsible for writing and developing dozens of books and games. Recent titles include The Belly Sticker Book, and the SmartFlash and TummyTime(TM) series, 100 Pablo Picassos; My Fridge; and My First Lift-the-Flap Animal Book. Mauricio has written for Lonely Planet, Chouette, PowerKids Press, and the magazines Gourmet and Saveur. He resides wherever he can find a good wi-fi connection and strong coffee, mostly in the eastern United States.

Amy Mullen is a self-taught digital illustrator living in Arlington, Virginia. In 2009, Amy created Mint Parcel, a line of affordable art prints for kids featuring animals, monsters, pop culture figures, and famous literary characters. She has written and illustrated two picture books, Nursery Rhyme Time and Annabel on the Go, and many board books, including Colors of The Pacific Northwest, Colors of New England, and My First Lift-the-Flap Animal Book.