Photographer Frank Hurley has placed himself in this picture – which shows him playing chess to fill the long dark winter days of mid-1915.
“We know this was taken before May 1915,” says Meredith Hooper.
“Because in May they all had a fit of madness and decided to shave their heads. And in this photo, Hurley, on the left, still has his hair.”
http://www.bbc.com/news/magazine-34856379