The Road to Oz (Oz Series, Book 5)

The Road to Oz is the fifth book in L. Frank Baum's Oz series. It was originally published on July 10, 1909 and documents the adventures of Dorothy Gale's fourth visit to the Land of Oz. It was followed by The Emerald City of Oz (1910).
While Dorothy Gale is at home in Kansas one day, she and her pet dog Toto meet the Shaggy Man who comes walking past the Gale farm. He is a friendly, yet slightly senile hobo with an optimistic, care free mentality. He politely asks Dorothy for directions to Butterfield, which is the nearest town on the prairie. The girl agrees to show him the way, bringing her dog with her.