This charming children's book, Knock Knock!, is a classic story for young readers. The book features a simple but captivating story about a boy knocking on a door. With colourful illustrations and an engaging storyline, it's the perfect book to encourage early literacy in children. Ideal for bedtime stories, story time at school, and independent reading practice. This is a vintage book in excellent condition and would make a great addition to any children's book collection or a unique gift for young readers.