Motels--Arizona; Buses; Continental Trailways; Marble Canyon Lodge]]> Muench, Josef]]> Northern Arizona University. Cline Library.]]> Marble Canyon (Ariz.); Lees Ferry (Ariz.); Colorado River (Colo.-Mexico); Vermilion Cliffs (Ariz. and Utah) ; Echo Cliffs (Ariz.); Grand Canyon (Ariz.); United States Highway 89;]]> 1940-1949; 1950-1959; 20th century]]> Northern Arizona University. Cline Library.]]>