"Alexander and the Wind-Up Mouse" by Leo Lionni is a delightful picture book in the Step Into Reading Series, perfect for beginner readers. Published by Random House Children's Books in 2014, this story follows the adventures of a young mouse named Alexander as he sets out to find a wind-up mouse. With charming illustrations by the author, this book is sure to entertain young readers with its engaging tale of friendship and determination. The compact size of 9 inches in length and 6 inches in width makes it easy to carry around for reading on-the-go.