"Mount Everest reconnaissance from Nepal" . "reconnaissance of north-west face" . "trekking expedition to the Khumbu Glacier" . . "the same route as Houston and Tilman" . "reconnaissance of routes to Everest" . "Mount Everest reconnaissance from Nepal" . . . "British 1952 Cho Oyo expedition" . "post-war British Everest attempts" . "exploratory expedition to Everest through Nepal" . . . . "first attempted in 1952" . "reconnaissance of Mount Everest from Nepal" . . . . "two British reconnaissance expeditions in Nepal" . . . "British attempt on Cho Oyu" .