Knock Knock Greeting Cards | Hachette Book Group

A Happy BIRD-DAY Card Kit: Color-in Cards with The Pigeon

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BESTSELLING AND BELOVED: Mo Willems’ characters have been entertaining readers for over two decades, earning numerous awards and a devoted fan base across generations. This greeting card kit brings the same wit and whimsy to gift-giving, making it a must-have for fans of… Read More
A Thank-You Card Kit: Color-in Cards with Elephant & Piggie

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Add an extra special message to any gift with these joyful color-in cards featuring Mo Willems' iconic characters! These black-and-white character notecards are bursting with personality and a sense of fun for kids—and just waiting to be colored-in and personalized… Read More

Mo Willems Workshop

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Mo Willems Workshop is an exciting publishing program featuring fresh content based on Mo Willems’ characters and brands, including Elephant & Piggie and The Pigeon, to inspire creativity and spark serious silliness. Mo Willems Workshop is a part of Hidden Pigeon Company, the multiplatform kids and family content company founded by Mo Willems, Stampede Ventures, and RedBird Capital Partners. Mo Willems is a number-one New York Times bestselling author and illustrator. He has been awarded three Caldecott Honors from his picture books, and two Theodor Seuss Geisel Medals and five Geisel Honors for his celebrated ELEPHANT & PIGGIE early readers. Mo began his career as a writer and animator on Sesame Street, where he garnered six Emmy Awards.

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A Happy BIRD-DAY Card Kit: Color-in Cards with The Pigeon

A Thank-You Card Kit: Color-in Cards with Elephant & Piggie

Mo Willems Workshop

About the Author

By the Author