The historic Walnut Inn, Tarkio, Missouri.Photo byAmmodramus, CC0, via Wikimedia Commons. The historic Walnut Inn in Tarkio, Missouri has also been referenced by other names such as Hanna, Hunter & Co., Hanna Travis & Co., and Williamson & Travis. This venue was a commercial building and hotel. In 1884, it was constructed as a store. In 1911, it was converted into a hotel. In 1982, the building was listed on the National Register of Historic Places.