MacKenzie Cadenhead is a children's and comic book author, whose stories about unexpected heroes blend adventure with humor and heart. She was an editor at Marvel comics before turning her attention to writing for young readers full time. Her books include Sally's Bones, Marvel Mutts, and the Marvel Super Hero Adventures series. Jingle is MacKenzie's debut picture book. Erin Kraan is a bestselling illustrator, woodcutter, and printmaker. She loves the process of carving her characters into wood and seeing how their quirky and whimsical identities come to life through the ink in the prints. She has illustrated many picture books including the #1 New York Times bestselling Buffalo Fluffalo and its sequel Buffalo Fluffalo and Puffalo by Bess Kalb; as well as Something's Wrong! by Jory John. Erin lives and works in Vancouver.