Katie Sharp is a writer and editor. She has written many fiction and nonfiction books, including Worms Eat Our Garbage, The History of Guitars, A Dictionary of Space, Silvia Hops Home, and Carlos Goes Camping. She lives in St. Louis, Missouri.

Vanessa Gutierrez is a digital artist and children's book illustrator for several titles, including No Means No and Best Buddies. She is also an educational illustrator for Lexercise and designs characters for multilingual educational videos. Vanessa studied graphic design at Zulia University in Maracaibo, Venezuela.