A digital image of the portrait is available from the National Library of Australia (NLA) <a rel="nofollow" class="external text" href="http://www.nla.gov.au">website</a>.  The <a rel="nofollow" class="external text" href="http://nla.gov.au/nla.pic-an24134710">NLA image</a> contains spurious indexing information along the bottom. This image is a cropped version that eliminates these.
<ul><li><a href="//commons.wikimedia.org/wiki/File:Albert_Namatjira_with_Jack_Kramer_and_Frank_Sedgman.jpeg" title="File:Albert Namatjira with Jack Kramer and Frank Sedgman.jpeg">Albert_Namatjira_with_Jack_Kramer_and_Frank_Sedgman.jpeg</a>: Unknown</li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:M0tty" title="User:M0tty">M0tty</a> (<a href="//commons.wikimedia.org/wiki/User_talk:M0tty" title="User talk:M0tty"><span class="signature-talk">talk</span></a>)</li></ul>
2009-09-27 10:41
<ul><li><a href="//commons.wikimedia.org/wiki/File:Albert_Namatjira_with_Jack_Kramer_and_Frank_Sedgman.jpeg" title="File:Albert Namatjira with Jack Kramer and Frank Sedgman.jpeg">Albert_Namatjira_with_Jack_Kramer_and_Frank_Sedgman.jpeg</a></li></ul>