The B.A.N.Z. Antarctic Expedition: Official original photograph by Captain Frank Hurley: Image A38 - Title: Solving Secrets of Antarctic Depths, with official 'Mawson Antarctic Expedition' handstamp and release date 'Tuesday Apr.15, 1930' verso, together with official printed letterhead with details of the image, '...Sir Douglas Mawson (left), Dr. Ingram (centre), Mr. J.W.S. Marr (right)....', 20 x 26 cm.