Major Ernest Henry Shackleton, C.V.O, aged 44.
unidentified photographer
CC BY-SA 3.0
Hugh Robert Mill, <i>The Life of Sir Ernest Shackleton</i>, William Heinemann, London 1923, <a rel="nofollow" class="external text" href="https://archive.org/stream/lifeofsirernests00milluoft#page/256/mode/2up">p. 256.</a>