THEODOR SEUSS GEISEL—aka Dr. Seuss—is one of the most beloved children's book authors of all time. From The Cat in the Hat to Oh, the Places You'll Go!, his iconic characters, stories, and art style have been a lasting influence on generations of children and adults. The books he wrote and illustrated under the name Dr. Seuss (and others that he wrote but did not illustrate, including some under the pseudonyms Theo. LeSieg and Rosetta Stone) have been translated into fifty languages. Hundreds of millions of copies have found their way into homes and hearts around the world. Dr. Seuss's long list of awards includes Caldecott Honors, the Pulitzer Prize, and eight honorary doctorates. Works based on his original stories have won three Oscars, three Emmys, three Grammys, and a Peabody.

ALASTAIR HEIM is the author of thirteen children’s picture books including Hello Door, which was named one of The New York Public Library’s Best Books of 2018, The Great Puppy Invasion, which won the 2019 Oklahoma Redbud Read-Aloud Award, and Quiet Down Loud Town!, which was named a 2021 Junior Library Guild Gold Standard Selection.

He has also written three books for Dr. Seuss Beginner Books titled If I Had Your Vote, If I Ran Your School, and If I Were Saint Nick—all featuring The Cat in the Hat—as well as the board book I Am the Cat in the Hat. He lives in Kansas City with his wife and three incredible children.

New Jersey native and "constant doodler" Aristides ("Art") Ruiz has illustrated over 100 books for children—among them 40+ books in the Cat in the Hat's Learning Library series. A versatile artist, he divides his time between illustrating for children and fine art painting. To learn more about Art and his work visit aristidesruiz.com.