Capt. John Noel (26 February 1890 – 12 March 1989) documented the Mallory Everest expeditions in 1922 and 1924 developing many initiative camera systems in the process. His photographs can be seen here: http://www.mounteverest.uk.com
In 2007 I was lucky enough to meet his daughter and also to follow in his footsteps, through Tibet, to Mount Everest.