CP de la Motte - "Officers of the Aurora", from <a rel="nofollow" class="external text" href="https://archive.org/details/withaurorainanta00davi"><i> With the "Aurora" in the Antarctic, 1911-1914</i></a> (1919).
Photographer not stated in source
Published in JK Davis, <i>With the "Aurora" in the Antarctic, 1911-1914</i> (first published 1919).