Oscar Johannes Ludwig Eckenstein was an English rock climber and mountaineer, and a pioneer in the sport of bouldering. Inventor of the modern crampon, he was an innovator in climbing technique and mountaineering equipment, and the leader of the first serious expedition to attempt K2.

Captain John Percy Farrar, also known as Percy Farrar and as J. P. Farrar, was an English soldier and mountaineer. He was President of the Alpine Club from 1917 to 1919 and a member of the Mount Everest Committee. Farrar's obituary in The Times stated that he 'was known by repute to every one interested in mountaineering in England and on the Continent, and his personal friends at home and abroad were legion'.