Kate Messner 
Journey through Ash and Smoke 

In this middle grade historical adventure, a dog times travels to the middle ages and reunites a family after a volcano eruption in Viking-era Iceland.Ranger, the time-traveling golden retriever, has landed in Viking age Iceland, where he meets a girl named Helga, who seems perfectly able to take care of herself-until a volcano erupts just as Helga’s new sibling is about to be born! Together Ranger and Helga to journey through the ash and smoke to find her father and bring him home in time.