Peter Oliver served with Coke's Rifles during the Second World War until his death on active service in Burma in 1945. Included here are papers relating to his army career. However, he is better known as a mountaineer, and particularly as a member of two unsuccessful Everest expeditions in 1936 and 1938. Climbing regularly in the Himalayas and to a lesser extent in the Alps during the 1930s, Oliver's papers are noteworthy for his detailed climbing journals, his articles on mountaineering, and his series of army and mountaineering photographs. Peter Oliver was also a keen amateur artist, and his pencil sketches of his companions illustrate Hugh Ruttledge's ‘Everest: The unfinished adventure’, which tells the story of the 1936 expedition.