Lori Mortensen drew a lot of pictures when she was little, including a few crumpled "disaster-pieces"! Today, she is the author of many popular children's books, including Cowpoke Clyde and Dirty Dawg illustrated by Michael Allen Austin and If Wendell Had a Walrus illustrated by Matt Phelan.

She lives in Northern California with her family and her cat, Max, who'd much rather nap than draw.

Betsy Lewin is the Caldecott Honor–winning illustrator of Click, Clack, Moo: Cows That Type and its sequels, including Click, Clack, Quack to School!; Click, Clack, Ho, Ho, Ho; Click, Clack, Peep; Click, Clack, Boo!; Giggle, Giggle, Quack; Duck for President; Dooby Dooby Moo; and Thump, Quack, Moo; in addition to a number of other picture books, including So, What’s It Like to Be a Cat? and Where Is Tippy Toes? She lives in Brooklyn, New York.