Doreen Cronin is the author of many bestselling and New York Times bestselling picture books, including Click, Clack, Quack to School!; Click, Clack, Surprise!; Click, Clack, Ho, Ho, Ho; Click, Clack, Peep; Click, Clack, Boo!; Dooby Dooby Moo; Thump, Quack, Moo: A Whacky Adventure; Bounce; Wiggle; Duck for President; Giggle, Giggle, Quack; Bloom; and the Caldecott Honor Book Click, Clack, Moo: Cows That Type as well as The Chicken Squad series and Cyclone. She lives in Brooklyn, New York.

Juana Medina is the author-illustrator of Juana & Lucas, which won the 2017 Pura Belpré Author Award; Juana & Lucas: Big Problemas; Juana & Lucas: Muchos Changes; and many other titles and has illustrated numerous picture books, including Smick! by Doreen Cronin and I’m a Baked Potato! by Elise Primavera.

Born and raised in Bogotá, Colombia, Juana Medina now lives with her family in the Washington DC area, USA.