At least the "M" logo still exists to this very day in 2008! ;)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/90384027@N00">Mikey</a> from Wythenshawe, Manchester, UK
CC BY 2.0
<p><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/90384027@N00/2916614987/">The good old GMT logo</a>
</p>
<ul><li>Uploaded by <a href="//commons.wikimedia.org/w/index.php?title=User:Ultra7&amp;action=edit&amp;redlink=1" class="new" title="User:Ultra7 (page does not exist)">Ultra7</a></li></ul>