Circle

Mac Barnett is the author of numerous books for children, including five illustrated by Jon Klassen: Square; The Wolf, the Duck, and the Mouse, an E. B. White Read-Aloud Award winner; Triangle; Sam and Dave Dig a Hole, an E. B. White Read-Aloud Award winner and a Caldecott Honor Book; and Extra Yarn, which received a Caldecott Honor and a Boston Globe–Horn Book Award. Mac Barnett lives in California.Jon Klassen is the author-illustrator of I Want My Hat Back, an E. B. White Read-Aloud Award winner and a Theodor Seuss Geisel Honor Book; This Is Not My Hat, winner of the Caldecott Medal and the Kate Greenaway Medal; and We Found a Hat. He is also the illustrator of two Caldecott Honor books, Sam and Dave Dig a Hole and Extra Yarn, both written by Mac Barnett. Jon Klassen lives in Los Angeles.

Jon Klassen is the creator of the #1 New York Times bestselling I Want My Hat Back, which received a Theodor Seuss Geisel Honor, and its companions, This Is Not My Hat, which won a Caldecott Medal and a Kate Greenaway Medal, and We Found a Hat, named a Publishers Weekly Best Children’s Book of the Year. He is also the creator of the Your Places and Your Things board book series, as well as the picture books The Rock from the Sky and The Skull. He is the illustrator of How Does Santa Go Down the Chimney?, Extra Yarn, Sam and Dave Dig a Hole, and the Shapes Trilogy, all by Mac Barnett. For his contributions to children’s literature, Jon Klassen is a member of the Order of Canada and was named the 2026 recipient of the Astrid Lindgren Memorial Award. Originally from Niagara Falls, Ontario, Jon Klassen now lives in Los Angeles.