There is a rich and extensive literature of mountain climbing. See E. Whymper, Scrambles amongst the Alps (1871, 6th ed. 1936, repr. 1966); D. W. Freshfield, The Exploration of the Caucasus (2d ed. 1902); H. W. Tilman, The Ascent of Nanda Devi (1937) and Mount Everest, 1938 (1948); H. E. G. Tyndale, Mountain Paths (1949); W. R. Irwin, ed., Challenge: An Anthology of the Literature of Mountaineering (1950); Sir Arnold H. M. Lunn, A Century of Mountaineering, 1857–1957 (1958); J. Bernstein, Ascent (1965); S. Styles, Foundations of Climbing (1966) and On Top of the World (1967); A. J. Huxley, ed., Standard Encyclopedia of the World's Mountains (1969); F. Fleming, Killing Dragons: The Conquest of the Alps (2000); M. Isserman and S. Weaver, Fallen Giants: A History of Himalayan Mountaineering (2008).