Seeing things whole : the essential John Wesley Powell - Powell, John Wesley, 1834-1902; DeBuys, William Eno (Washington, DC : Island Press/Shearwater Books, 2001)
Includes bibliographical references (p. 369-373) and index
'Works by John Wesley Powell' : p. 359-367
Keywords: Powell, John Wesley, -- 1834-1902; Powell, John Wesley, -- 1834-1902 -- Philosophy; Arid regions -- West (U. S.); Explorers -- United States -- Biography; Geologists -- United States -- Biography; Conservationists -- United States -- Biography; Colorado River (Colo.-Mexico) -- Description and travel; West (U. S.) -- Description and travel; Grand Canyon (Ariz.) -- Description and travel; West (U. S.) -- Environmental conditions