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.

Lois Ehlert has created numerous inventive, celebrated, and bestselling picture books, including Chicka Chicka Boom Boom, Holey Moley, The Scraps Book, Mice, Ten Little Caterpillars, RRRalph, Lots of Spots, Boo to You!, Leaf Man, Waiting for Wings, Planting a Rainbow, Growing Vegetable Soup, and Color Zoo, which received a Caldecott Honor. She lives in Milwaukee, Wisconsin.