The Adventures of Hildie and Carlos books are based on the real-life friendship between a little girl named Hildie and a happy kitty and best friend named Carlos. Hildie and Carlos have traveled to many places and have had many exciting experiences. We are excited to share with young children stories of travel to add to their own learning journeys, and to inspire them to have amazing travel experiences themselves!Hildie and Carlos invite you to join them on their amazing travels around the world!.