British Gun Carrier Mark I (60 pdr)) of 1917.
Unknown author<span style="display: none;">Unknown author</span>
WWI
Imperial War Museum - picture scanned by me <a href="//commons.wikimedia.org/w/index.php?title=User:Ian_Dunster&amp;action=edit&amp;redlink=1" class="new" title="User:Ian Dunster (page does not exist)">Ian Dunster</a> 10:45, 28 May 2005 (UTC) from: <i>The Tank Story</i> a <i>Purnell's History of the World Wars Special</i> - Phoebus - 1973 - (No ISBN) and credited to: 'Imperial War Museum'.