Bill Martin, Jr. (1916–2004) has been called “America’s favorite children’s author.” He wrote more than 300 books for children, including the classic texts Brown Bear, Brown Bear, What Do You See?, illustrated by Eric Carle; and Chicka Chicka Boom Boom, illustrated by Lois Ehlert.

Michael Sampson is a New York Times bestselling author of twenty-two books for young children, including Chicka Chicka 1, 2, 3 and The Bill Martin Jr Big Book of Poetry. He and Bill Martin Jr wrote many popular books together, including Panda Bear, Panda Bear, What Do You See? and Baby Bear, Baby Bear, What Do You See? Michael Sampson lives in Flagstaff, Arizona.