Průzkum řeky Colorado a jejích kaňonů : zpráva majora J.W. Powella, Washington 1895John Wesley PowellÉpuisé4,4Prévenez-moi
Exploration of the Colorado River of the West and Its Tributaries: Explored in 1869, 1870, 1871, and 1872, Under the Direction of the Secretary of theJohn Wesley PowellÉpuisé4,5Prévenez-moi
Report on the Geographical and Geological Survey of the Rocky Mountain RegionJohn Wesley PowellÉpuisé4,3Prévenez-moi
Seventh Annual Report Of The Bureau Of Ethnology To The Secretary Of The Smithsonian Institution 1885-86John Wesley PowellÉpuisé4,3Prévenez-moi