The second of these recruits was a special friend of the first [who] was soon enlisted, and the planning of the campaign began. This was the seventeen-year-old George Mallory, a mathematics scholar at Winchester who later disappeared on the to Mount Everest. As Irving later remarked, It was just chance that I took out to the Alps in 1904 a boy destined to become so famous on Everest. Much of Irving's fame derives from his being the person who introduced Mallory to mountaineering. Aside from Gibson and Mallory, who both went on the first trip in 1904, other members of the Winchester Ice Club were Guy Bullock (who reached Mount Everest's North Col in 1921) and Harry Tyndale.