Prudden, Theophil Mitchell On the Great American Plateau: Wanderings Among Canyons and Buttes, in the Land of the Cliff-dweller

Prudden, Theophil Mitchell On the Great American Plateau: Wanderings Among Canyons and Buttes, in the Land of the Cliff-dweller

Prudden, Theophil Mitchell The Story of the Bacteria and Their Relations to Health and Disease

Prudden, Theophil Mitchell Prehistoric Ruins of the San Juan Watershed in Utah, Arizona, Colorado and New Mexico