Brian P. Cleary is the creator of the best-selling Words Are CATegorical series, now a 13-volume set with more than 2 million copies in print. He is also the author of the Math Is CATegorical series and the single titles Rainbow Soup: Adventures in Poetry, Rhyme and PUNishment: Adventures in Wordplay, Eight Wild Nights: A Family Hanukkah Tale, Peanut Butter and Jellyfishes: A Very Silly Alphabet Book and The Laugh Stand: Adventures in Humor. Mr. Cleary lives in Cleveland, Ohio.
Brian Gable is the illustrator of several Words Are CATegorical books, as well as the Make Me Laugh joke books and the Math Is CATegorical series. Mr. Gable lives in Toronto, Canada, where he also works as a political cartoonist for the Globe and Mail.