Official road map of Arizona.H.M. Gousha Company[1937]At head of title: [Conoco logo].Ill., text, and maps of Zion National Park, Grand Canyon National Park, Petrified Forest National Monument, Tucson, and Phoenix on verso.In lower left: 202-J.C.In lower right: 9-K.Indexed.Relief shown by hachures and spot heights.cartographic