Map of the South Polar regions, by Douglas Mawson Centred on Antarctica, with contours showing ocean depths in fathoms. Scale 1 inch: 631.3 miles. With the proposed course of the Australasian Antarctic Expedition marked in red ink, including the outward and return tracks of the expedition ship from Tasmania and returning to Australia. Headed: 'Royal Geographical Society, April 10th 1911. South Polar Regions. With the Antarctic Continent drawn to illustrate the probable topography as deduced from present available data by D.Mawson, D.Sc., B.E.' 10 April 1911