Embark on a thrilling adventure with "Lost Island," a captivating novel co-authored by Ralph Henry Barbour and Henry P. Holt. Set in the 1910s, this story follows a group of young explorers as they uncover the mysteries of a remote island. Filled with suspense, intrigue, and unexpected twists, this book is a delightful blend of mystery and adventure that will keep readers on the edge of their seats.