Catherine A. Hapka is an American author of children's books. She has written over 200 books, including the popular series The Saddle Club, Pony Tails, and Animal Ark. She has also written books for the Disney Fairies and Disney Princess franchises. Hapka has been writing since the early 1990s and has been published by many major publishers, including Scholastic, HarperCollins, and Penguin. She is a graduate of the University of Pennsylvania and lives in Pennsylvania with her family. Hapka is passionate about writing and loves to share her stories with young readers. She is an advocate for literacy and encourages children to read and explore the world of books.