Charles Howard-Bury, from 1921 Mount Everest expedition members. Taken at 17,300 ft, advanced base camp. Published in <i>Mount Everest the Reconnaissance, 1921</i>; by Howard-Bury, C. K and other members of the Mount Everest expedition; published by Edward Arnold &amp; Co., London, UK, 1922, p. 178
Photographer:  Alexander Frederick Richmond “Sandy” Wollaston (22 May 1875 – 3 June 1930)
<a rel="nofollow" class="external text" href="https://archive.org/stream/mounteverestrec00howa#page/n228/mode/1up"><i>Mount Everest the Reconnaissance, 1921</i></a>